It seems pretty likely we'll be getting a bit of both, but in terms of what people are looking forward too: are you more excited about seeing new characters developed and introduced to the game, or are you more interested to see how classic Arkham characters are handled in the new game?
At the moment, I'm sort of itching to see Harvey Walters, Dexter Drake, Carolyn Fern included.
EDIT: Can't edit title typo - I meant 'or' of course
Edited by Srba