Quoted from Wamprat:I have left the hero stacking on and on the pro all x-men have to be either flashing or lit before starting magneto multiball. Danger room will then be available after defeating magneto.
I often get all the heros but not as often to danger room.
I really prefer the game this way with hero stacking, it gives it a more frenetic feel and suits the game more than adding one hero at a time imo.
Agree 100%, feels like you are working as a team with the hero stacking on.