Y'know, the problem with that is that I can't actually think of anything from the Joker that I'd consider especially big, cruel or twisted. The Joker's got all of the Batfamily around a table, and won't kill the mbecause he's the Joker and not some other bad guy. Pretty much everyone around that table has been dead at least once. Who cares?
Anyway, my reason for not keeping up with these events is just because they're events. I can't and won't read 7 different titles, 5 issues each, to know the whole story. For fans like me ("not really big fans but I can be persuaded to like a specific story"), the whole "universe" thing just blows. In my mind, each and every hero, except for the teams, lives in a separate continuity. Screw all cross-overs.
Also, if they actually wanted big/cruel/twisted, he should've cut off Bat's face, like his, forcing him to forever wear a mask. Though that wouldn't stick either, of course.