This looks exciting to me as someone who grew up watching a lot of TMNT. Might be too many villains for the film's own good, though. And I wish they didn't have to include the Joker and Harley yet again. Batman has other deadly villains besides the Joker; can we get a look at some of them for a change?
Shredder and Ra's al Ghul are a pretty logical team-up. It'll be nice of Batman doesn't just tear through them all by himself (as the trailer kind of makes it look).