I just wanted to make a post on this and share some ideas that I think would separate Madden 21 from the past video games.
These ideas are not necessarily in game suggestions, but rather suggestions for the presentation of the games themselves. Some pretty cool ways the game presentation could improve is having alternating commentating teams for the games, rather than hearing the same voices all the time. It would be cool to hear people like Al Michaels, Chris Collinsworth, Tony Romo, Joe Buck, Troy Aikman and maybe even John Madden if possible. I think this would be cool because those individuals are the voices of the NFL, not Brandon Gaudin and Charles Davis. Along with including rotating announcers, you could also include rotating presentations such as NFL on CBS, NFL on Fox, and Sunday/Monday/Thursday Night Football where you could also use the theme songs that are associated with these programs. I think if you turned on a game and heard the Sunday Night Football jingle come on with Michaels and Collinsworth commentating, you could really recreate the feel of the NFL.
Another idea to improve the game is to include legendary teams from the past similar to how NBA 2K does it. For example, maybe get an option to play with the 16-0 Dolphins squad, or the option to play with your favorite teams' past Super Bowl champs squad. I think it would be awesome to be able to recreate old Super Bowl match ups with some iconic players.