I don't like it because this isn't an action game. It has no place here. TERA sure. but here? I'd rather see animation locks removed entirely and reduce the time you have to move to safety from boss attacks by a few seconds. Requiring quick reflexes I don't mind, losing control of my character I do mind.

and as far as immersion, if I'm standing here poking some badass demon looking guy, and I wind up some big attack when all of a sudden the ground below me starts glowing, I'm going to run away, not stand there and finish my wind up. - I wouldn't mind the locks so much if there was a way to cancel the ability to break it early.