Before thinking about the different features, the game really really needs to progress in
user experience or just with a
more friendly design.
We are years away from a Football Manager experience. I think this austerity of design is losing a large part of the audience. Maybe open it to a personal skins options. I see the mods but it's just a really few part of the game.
Having a huge amount of content is very good, but showcasing it is better. Otherwise, we're missing around some great stuff.
The game is currently far too complicated to handle for a beginner. We have the same problems than FM in the soon 2000's, a game who's like an Excel files with images just for hardcore fans. And I see the same debate with the 2D/3D animate (nobody can now say that is not essential in Football Manager to follow our players, our just for the immersion)
(ho yes, and a French version would be perfect
)