After nearly a 50 percent roster turnover at the beginning of the season and constant personnel juggling throughout the year, Coach Joe Gibbs says the Redskins finally have a nucleus of "our kind of people."

Even so, there will be more roster changes. There may not be as many switches next season, but the Redskins still haven't achieved Gibbs' goal of "eight or 10 all-pro players."

This is a report on how the most prominent Redskins performed, and how many of them figure in the team's future:

Joe Theismann, QB: After a roller-coaster start, Theismann has the best statistics of his career despite 19 interceptions. He remains one of the league's best scramblers, but admits he sometimes tries to force big plays. If he signs a new contract, he should be helped next year by improved receivers.

Joe Washington, RB: The team's most valuable player has given the Redskins the quickness they needed so badly the past few years. He leads the team in rushing and receiving despite two serious injuries that cut into his playing time. But how long can he hold up under such a workload?

John Riggins, FB: Riggins said last week on a television show that he received the impression that he and Tom Flick were being saved for 1982. The Redskins' one-back offense severely limited his appearances, but he ran well enough in a few games to become a particular fan favorite. He has more years left, but does he want to come back?

Tom Flick, QB: Despite rare game appearances, Redskin coaches are convinced Flick will be a big-league quarterback. He doesn't have a strong throwing arm (nor does Dan Fouts, for that matter) but is intelligent enough to dump off passes in safety valves when under heavy pressure.

Art Monk, WR: Monk had to make the transition from Joe Walton's precise pass routes last season to Gibbs' less-structured approach. He has some trouble with the bump and run and with making quick moves, but still is the Redskins' most consistent end.

Wilbur Jackson, FB: Until he hurt his knee and was forced to sit out the rest of the seaon, Jackson had started ahead of Riggins. He is quicker than Riggins and a better receiver, which makes him more suitable for Gibbs' one-back offense. Yet Riggins has shown he is more durable. Jackson figures in future plans.

Don Warren, TE: Although he leads Redskin tight ends in receptions -- in spite of dropping passes frequently for a while this season -- he will probably do more blocking than receiving in the future.

Terry Metcalf, WR: It was a difficult year for Metcalf, who found himself playing a secondary offensive role for the first time. The move from halfback to receiver might prolong his career. His versatility and hard-working attitude have made him a particular favorite of Gibbs. If he gains 107 combined yards against the Rams Sunday, the Redskins will owe St. Louis a fourth-round 1982 choice instead of a fifth.

Russ Grimm, G: The Redskins gave up their 1983 No. 1 pick mainly to select Grimm in the third round last April. He already is the team's best lineman, the man who leads the blocking on important running plays. He made the league all-rookie team and has the ability to be all-pro.

Joe Jacoby, T: Jacoby went from a free agent to the NFL all-rookie team despite starting only half a season. He beat out Mark May, the No. 1 draft choice. And even though he already is 6 feet 7 and 290 pounds, the Redskins expect him to get bigger and better next to Grimm.

Mark May, T: May is committed to an off-season weightlifting program that will give him more strength and increase his weight from 255 to 280. He eventually will start at right tackle in place of George Starke.

George Starke, T: Joe Bugel, the line coach, says Starke has had one of his best-ever seasons and can play three more years. Starke, however, is on a year-to-year plan. Melvin Jones, G: Jones' neck gave him trouble in midseason because of weeks of pounding. He is very strong, a hard worker, but will have to prove in coming years that he has the durability. He could be challenged for his spot next summer from Fred Dean, who spent the season on the injured-reserve list because of a bad arm.

Jeff Bostic, C: Bugel says Bostic has played this season "with athletic arrogance." Who would have thought this kick-snap specialist would emerge as the starting center, allowing Grimm to move over to guard? Bostic relies more on technique than strength and he, too, will benefit from off-season lifting.

Lemar Parrish, CB: "My body hurt me, not my ability," Parrish says after a season of limping on a bad knee. The Redskins' oldest player (34), Parrish has no plans to retire. He wants to prove wrong anyone who thinks age has caught up with him.

Joe Lavender, CB: His coaches say Lavender had another fine season, even though he didn't make the Pro Bowl. He'll be 33 in 1982 and is nearing the end of his career. With the liberalized passing rules, it's difficult for any NFL cornerback to stand out, especially if he isn't helped by a pass rush. And Lavender has rarely benefited from a pass rush.

Jeris White, CB: An aggressive hitter, he functions better in a zone than in the man-to-man coverages the Redskins use frequently. His role with the team next year probably will be as a nickel back.

Tony Peters, S: Richie Petitbon, the defensive coordinator, thinks Peters could be the NFC's best strong safety if he could become more consistent. When Peters is on, he's good enough to force opponents to run to the other side. As teams continue to throw more frequently to their tight ends, Peters' role will take on even more importance.

Mark Murphy, S: The rap always has been that he lacks quickness. However, he leads the Redskins in tackles, interceptions and fumble recoveries and is their defensive quarterback. Other than Neal Olkewicz, he has been the unit's most valuable player this season.

Dave Butz, DT: His peers voted him to a second alternate position on the NFC Pro Bowl squad. He is the Redskins' dominant lineman against the run. He is double-teamed frequently, which hinders his pass rush, and sometimes his concentration wanders.

Mat Mendenhall, DE: Mendenhall has had sore knees, but has held up well enough against the run since getting a starting job to convince the coaches he has a promising future. He was drafted for his pass-rush potential, but has become a run-down specialist. He will be drilled in training camp on pass-rush techniques.

Dexter Manley, DE: Manley had to make the switch from a stand-up college player to a down NFL lineman faster than the Redskins had hoped. He has as much ability as anyone on the team, but lacks experience. He could become a sack specialist.

Perry Brooks, DT: Although he leads in sacks and forced fumbles, Brooks again will face a strong challenge in training camp for his starting spot, especially if the Redskins bring in some young linemen as planned. Brooks is the tackle on the right side, which has had trouble stopping the run all season.

Neal Olkewicz, LB: He isn't supposed to be quick enough or big enough to play the middle, but without him the Redskin defense against the run would have been almost nonexistent. He will face a stiff challenge from Larry Kubin, the former Penn State star, in training camp.

Monte Coleman, LB: Coleman had a shoulder injury, then made an unhappy switch to the right side. Now that he is back on the left, he has become much steadier. Coaches would like him to be more hostile on the field. He ranks as a potential Pro Bowl player.

Rich Milot, LB: He has been bothered by injuries in two of his three pro seasons that have hindered his development. If he can stay healthy, he and Coleman could be the Redskins' outside linebackers for years to come. He already has proven his ability to cover on pass plays.

Brad Dusek, LB: Dusek made a gutty comeback this season from a series of major injuries, then was shuffled over to the right side late in the year. Dusek said he'd like to play another season, but it may not happen.

Mike Nelms, KR: The Redskins were 0-4 while he was recovering from a broken thumb and 7-4 while he has been healthy. He is too talented to be confined to return work, so he will be tried as a wide receiver. If that move works, it could be a big plus.

Mark Moseley, K: Moseley recovered from early season injury problems to win two straight games in the middle of the schedule. He says a revised off-season conditioning program should end his problems with pulled leg muscles.

Mike Connell, P: His gross average is the highest for a Redskin punter since 1975, but he ranks 13th in the NFC and 22d in the league. He's made it through two straight training camps despite stiff competition and will face more challengers this summer.

TE Rick Walker and WR Virgil Seay started most of the season, which will give them an edge early in camp, although the Redskins are sure to bring in plenty of receivers. LB Mel Kaufman needs to increase his strength but has potential and LB Quentin Lowery has impressed the coaches with his raw talent. Veteran WR Ricky Thompson will undergo knee surgery next week, which will ease a nagging problem. RB Clarence Harmon has recovered from a fractured shoulder and will press next season for playing time as a third-down, pass-receiving specialist. S Curtis Jordan should add depth and DE Mike Clark will challenge for a starting position.