Glad someone else made this cause I was too lazy haha.
QB Vision Cone - Probably my favorite feature ever. In a game that seems arcadey, the vision cone (IMO) brought a sense of simulation and realism to Madden. It was difficult to get accustomed too, but could've easily been expanded on to make easier instead of taken out completely.
Staff Hiring - The ability to hire and fire all staff. For example, Michael Irvin as the Head Coach, Troy Aikman OC, Deion DC and ST. Coaches also have ratings, which include 'teaching' and 'motivation' etc. A DC with high ratings will reflect in the way the defense plays. You could have something similar to the Coach Tree of NCAA where coaches can give small boosts to players.
Owner Mode Create a Stadium - Can I please create my own stadium, like how I was able to do before?
Offseason - Bring in like OTA's, and Training Camp, doing drills and what not, Draft Combine and having the ability to watch the upcoming rookies play, doing drills as players we may be scouting.
THIS^^ - I would love to see interviews in here again, obviously those interviews were in the Superstar mode and there was no live videos going on while it was happening, but if Jimmy Neutron can make a talking robotic dog in the early 2000s, then we can get some live gaming going on during the interviews as well.