Heh, quite a few people have commented on the catwoman faceplant.
I'll admit at first it felt clunky, but after I got used to it I found it incredibly useful to stop just under the top of a building and save the final jump to land on top of a thug and claw his face off.
I'd go as far to say that the batman games need more changes of character. If there is one thing that CoD does well it is keeping the pace varied. The Delta Force "Run N Gun" the SAS "Sneak N Snipe" the AC-130 "Armchair with guns" sets serve to break everything up and stop it getting stale.
No matter how much I love the Batman combat, towards the end of the game I've had enough and you should always leave them wanting more.