A create a stadium for manager mode would be nice; and you could use for online too
When creating the stadium the more money you've got the more you can spend on capacity and things. And the more different sponsor boards you have the more ca$h comes in
Also being able to make the lay off man (on free kicks) to rainbow flick the ball up and then you could run up and volley in the goal.
Manager mode could also let you create different kits for your club, like after the seasons up, create a new away kit to boost sales, that kind of thing, ya know. And when signing another sponser deal; have the logo on your shirt.