There are a ton of things I'd like done this way... You give people a Madden game which only uses space time and information on a disck for a straight up football game... A vs. modes only (quick play and online) and one season. Charge 40$ for it. Superstar 10$, Franchise 10$, Historic Rosters 5$ and all that other stuff comes to you via DLC...
The only catch is that the core game must be solid in order for it to work... But if it were, you'd get your gammers happy and allow people that want certain fetures to get them, while not forcing your gamers to get features they don't want (I'm looking at you Superstar)...