IGN has published a new Q&A with AA Development team members. Here they discuss various aspects of the game. Here's a snippet on the area discussion:
The arena walks a good line between skill- and turn-based combat. You don't have to be a twitch gamer or hopped up on coffee to target and damage foo's in a heavy way. At the same time, it's not like a lot of other MMOs with all the standing around and what I like to call sleepy combat.