Didnt see any threads about this game so I've made it.
Characters Suggestions:
Raven and Starfire
I would like to see Raven and Starfire in this game because of my love of Teen Titans and the fact that 3 out of 5 of the group (Beast Boy, Robin, Cyborg) are already playable.
Arkham Knight
Although we don't know much about him, the arkham knight would be pretty cool to play as in lego form. It would be great advertising and more hype for Batman Arkham Knight in 2015.
Aqualad (Young Justice)
Although Young Justice has been cancelled, the show has sparked major interest for this character and even more liked than Aquaman himself.