Once the lockout ends, expect there to be many "controversies" solved by either some guys getting cut or by way of trade. Some will not be as shocking as others but IMO its pretty obvious out of the current players on the roster who will stay and who won't. I will go through each position except the O-line, Kicker and Punter.
QB: This is pretty set as to who's the starter. However between AJ and Thad I think AJ will make the roster with Thad staying on the PS.
Battle to watch: None
Starter: Sam Bradford
2nd String: A.J. Feeley
Cut/PS/Traded: Thaddeus Lewis
RB: This is also set at starter. And your guess is as good as mine as to who else makes the 53 man roster. I expect once the lockout ends for a RB or two to be signed. I think Keith Toston is still on the roster and I would expect him to be 3rd string. (Sidenote)- Something I did on Madden which won't happen most likely is make Mardy Gilyard into a Runningback. I think HB would better suit his abilities anyway.
Battle to Watch: B/U RB. Will it be a current player on the roster or a free agent?
Starter: Steven Jackson
2nd String: ???
3rd String: Keith Toston
FB: Ummmm, well we only have one now and that's Brit Miller. So, yeaaa. However I think we might not keep a FB but use an H-Back which would be one the TE's we have.
WR: Probably where the most "controversy" will be. We have 8 receivers right now and will have 9 if Clayton is re-signed. I believe 6 will make the roster. Some just outright SUCK *cough*Laurent Robinson*cough*. And others are just in a bad position. My view might conflict with your's but here it is.
Battle to Watch: Not really a battle but if Clayton isn't resigned Mardy Gilyard will make the roster and Avery will move into the starting spot Clayton would have resided in.
Starters: DX and Clayton
2nd String: Avery* and Pettis (Avery might play slot)
Slot: Danny Amendola
3rd: Brandon Gibson
Cut/PS/Traded: Laurent Robinson, Greg Salas, Mardy Gilyard
TE: There's been quite a bit of focus on this position after the slightly puzzling pick of Lance Kendricks in the draft. Still some hate it some love it. I am one those that love the pick. I actually play TE at my school and I know what a WR playing TE can do for you, which is what Kendricks is. It creates mismatches constantly. And paired with Uh-Oh in the 2 TE set we're apparently going to run we should be giving defenses trouble all season long.
Battle to Watch: None
Starters: Kendricks and Uh-Oh
2nd String: Fells & Fendi
Cut/PS/Traded: Bajema and Derek Schouman.
DE: Spags is trying to create a monster-like D-line. The pick of Robert Quinn in the draft is proof of this. In a few years this line should be unstoppable.
Battle to Watch: If Quinn somehow beats out Hall for a starting job this season.
2nd String: George Selvie and Robert Quinn*
(Quinn will come in on passing downs and occasionally throughout games. He will not be starting.)
DT: There's a lot of talk that we'll pursue Barry Cofield once free agency starts. I am convinced that we will as well.
Battle to Watch: 2nd string spot between Cudjo and Scott. Maybe Clifton Ryan if he's brought back.
Starters: Fred Robbins and Barry Cofield* (Clifton Ryan)
SLB: I'm not even sure as to who will make the roster outside of David Vobora.
2nd String: Jabara Nelson
MLB: Starter is obvious. Kehl should be backup.
Starter: James Laurinaitis
2nd String: Bryan Kehl
WLB: This position will probably receive a huge makeover once the lockout end but for right now who knows.
Starter: Larry Grant
2nd String: Chris Chamberlain
3rd String: Eugene Sims (Yes I think he will be moved to LB)
CB: We're pretty set here as well as far as starters go. Backups as well.
Battle to Watch: Nickel Corner
3rd String: Quincy Butler
FS: A position many were hoping us to upgrade through the draft. Well, we did if you expect 7th round pick Johnathan Nelson to have an impact. I do believe Butler will slide to FS.
Battle to Watch: None
Starter: Darian Stewart
2nd String: Johnathan Nelson
SS: Could maybe be changed slightly through free agency. We have two similar players in Butler and Dahl and IMO both should split time evenly.
Battle to Watch: None
2nd String: Jermale Hines*/ James Butler
*- He could see some LB time.
Oh and I'd like to know which WR's wont make the roster in your opinions.