The Human Torch said:
I KNOW, RIGHT?!
Seriously, Anne Hathaway as the Catwoman has me driving up the walls. I am less inclined to see the movie because of her and Bane (out of all the villains you could pick, you went for the steroid one).
To be quite honest, there aren't really too many alternatives left that could actually end the franchise. Harley Quinn would have been fun to see after Joker's demise, but it would be underwhelming. The Riddler is cool, but this is the final movie and riddler cannot possibly turn the movie into a good finale.
I would have wanted it to somehow end with Joker, as I've always seen him as the main villain of the series, but seeing as he's already done for in the second movie, choosing the genius monster that once beat Batman is a decent choice.
Who else could they have used? The Penguin? Poison Ivy? Killer Croc?