I thought it was good. It's Saturday morning-level but that doesn't mean it's bad. I've always thought the Unlimited toyline had some interesting designs. Looking forward to seeing Monster Mayhem. I hope they keep 'em coming.
What I didn't like is how they sometimes screw up the origins of people in these features where they put lots of villains and heroes together. So Batman already knew who Killer Croc was, but going against the Animalitia was the first time he'd ever come across Man-Bat?
I wish they would do sequels to JLA: Trapped in Time as well.