I personally enjoy the Avernum series much more than the Avadon series - this is probably because of the difference between Blades of Avernum which I really enjoyed, and Avadon, which I found a bit boring. Blades has much fastee combat and it doesn't take an age to walk somewhere, since you can hold a key down to walk in that direction without having to wait on the animation.
Combat too, was much faster in Blades. Click means attack, not click, wait for long animation, attack.
So personally, I find it great that they also have an option to turn off the new animation in this game. It's a nod to the past ^.^