I would suggest the following for online dynasties...
Co-Op coordinators
A mode where 2 people could start as offensive and defensive coordinators of the same team. Both get 5 hours of recruiting for their side of the ball. Both call the plays for their side of the ball.
Come on EA you can do it.
Shouldn't be too hard to add.
I'm thinking of playing this way offline with a friend if I can get anybody over here often enough.