I don't like The Sims and I don't like Sim City, so that is why I don't request personal life and building stadium, stores, training camps and so on, as Fifa Manager got all of that already (if I feel a real craving to see that, I can play Fifa Manager for a while).
But three things I really feel I would like to see on FM 2010 are:
1) More complex tactic 5 x 5 boards, including more specific instructions to individual players like: get your game down the left, or down the middle, put their defense to run after you, etc. This shall include training and executing traps and plays for corners and fouls.
2) That I can play for my team as a Player/Manager. I mean, I don't want to actually play (with a joystick or keyboard) on the 3D game (that is boring, Fifa Manager has that already, and in the end is cheating). But I want to have to go and train my skills like all the other players, and be able to have myself on the game line-up so I can see myself playing - BASED ON MY SKILLS ONLY - as any other of the players. The AI will control me as it controls all the other players. But I would be able to select myself the areas I think I need improvement (like we do with any other players, training shooting, attacking, etc.)
3) As I become able to be a player/manager I want to see new ways of management, like for example, in real life, Real Potosi, a Bolivian team that is going to Libertadores 2009, doesn't have a manager. They are managed by a comitee of 5 players, each one acting as bench manager every other game. I think that is a **** of way to manage a team, as many players on different field positions can see the best way to arrange the team tactically. For example, if I am an Attacker I see the game on a different way than a Defender would see, so if I get players from all the field positions and we discuss the best way to manage the team together, I can have the best of all tactics. By the way, they are unbeatten since they started with this new way of manage their team.
Oh, I almost forgot. Different camera angles for the 3D. I want a bench view, as if I am training a lower league team, I won't have money to pay someone to seat up there and broadcast the game to me.