I think the combat is looking to be pretty great; just slow enough to be tactical-friendly, while still including faster and more responsive controls and feedback. Lots of abilities and possibilities it seems, too.
However, one thing that concerns me is those fade rifts when fighting demons. They look kind of annoying because, from what I tell from the videos, it's necessary to close them after the player finishes the enemy wave or waves, and they cannot be closed until that is done. Can we actually close them while we're fighting, or at least in-between waves? If not, they'll just be redundant chore. Being required to hold down the A button after every fight doesn't sound fun at all. Am I missing something, and there's more to it?
One thing I do appreciate is that, when a new wave of demons is going to appear, the game looks to give you a warning of exactly where they will spawn a couple seconds to prepare. That's a much better approach to the enemies dropping down out of thin-air in DA2, although I hope it only applies to the fade demons.