Do you think its a good idea to release a game for multiple consoles?
Atleast it is but later on you dont have enough time to get expansions on both MMO´s without lose alot money 
Well when multiplatforming, you would develop the game for all the platforms at the same time.
I think that because you develop for multiple consoles, that it should take double the time to produce the game meaning you lose more money from monthly fees, so its a big risk.