I was hoping for Ivory Tower. I thought that was one of the fan favorites. Warlock is... ok. Much like wizard. It is okay for some niche modes, but since there are only 6 maps I think they should have chosen a better all around map.
Ivory Tower would have been sick but I'd say we'll see that in Halo 5 perhaps? I'm okay with any so long as I can play some Halo soon.. I'm getting antsy..