1. The Salary Cap - It needs to be more realistic IMO.
2. Expansion in Franchise Mode - I think this would be a cool idea. Have teams protect players, then pick from the unprotected players.
3. Ability to create your own logo when you make a team.
4. In Franchise, have like a Sports Center report.
5. Monday Night Games with like different broadcasting (Probably impossible)
6. Be able to trade future draft picks.
7. Players in franchise to act like T.O
8. Players and Coaches on the bench look realistic.
9. Be able to send players to NFL Europe.
10. Have a practice squad for each team.
11. Player ratings are off. Example: Stokley (He's not as good as S. Moss)
12. Before the draft you should be able to hold a private scouting, like be able to play a scrimage game with the player like in NBA Live.
13. In the draft have players that come in and are studs right away, like Boldin, Merriman, and Cadalic.
14. Pro Bowl Challenges.
15. Half-Time Shows in the Super Bowl, Playoffs and Pro Bowl.
16. Field Goal Blocking - It's impossible.
17. Punt Returns - I can never return a punt, its rediculous.
18. Draft can be more realistic - Have like the top players walk up and get a jersey and have Tagliabue announce the picks.
19. Custom endzone dancing. Be able to hit certain buttons to do different things when you score.
20. Reporters on the sideline.
I realize some are far-fetched, but I think they should be looked into and would make Madden amazing.