MPQ occassionally runs a raffle style event where someone on facebook wins ‘fabulous prizes’.
How about a sweepstakes for a new character launch? For example: Luke Cage is dropping in a few days… why now have a sweepstakes for a new character launch where the top prize is that character ready to rock?
Drop 15 covers on the winner (5 of each color) and a motherlode of ISO on them? That way they can fully cover the new guy and get a headstart on leveling him?