I've not played FM regularly for years. My kids now play it and enjoy it. I loaded up a FM24 save and lost interest within an hour and haven't played it since. My viewpoint will be different from most on here who are proper fans.
Id want less messages and less information. Less clutter.
Ideally a game where I can feel like I'm involved in the end result and can play lots of games quickly. In my hours play at Bradford i don't think I even got through pre season. I think there's a lot of people put off by the scale of FM but equally for lots of people I guess that's what they enjoy.
Good luck to the makers. Sure it'll be popular 👍