I'm 100% against any incentives for managers. First, if someone's only managing because of the incentive, that's not the kind of manager I'd like to see on TT to start with. Second, people who don't have time to manage (due to work, school, etc) would feel like they cannot have the "full experience" of the game, just because they will never have access to these benefits from managing. You're effectively creating two classes of players and giving special treatment to one of those.
The bourgeoisie managers/players class and the proletariat - simple players class.