It'd be awesome if it were like MapleStory. You'd walk out of town and fight monsters (or other bakugan) with you bakugan and they'd have different skills and such. And there'd be an arena for fighting other characters. Of course, it's not gonna happen, but one can hope.
MS has two flaws: 1.) It's not an MMORPG it's an MMO-Side-Scrolling-Platformer. 2.) It was very easy to make private servers (dunno if it still is) but you could say 2 applies for warcraft I suppose...