I think the combination of lack of an auto-attack and really bad players playing makes it look stiff. Every time I watch a gameplay video I just get frustrated about how bad people are, they don't queue abilities at all, they kind of just sit there and try to figure out what ability to press next. Without an auto-attack it looks like you're just standing there. I think it'll be different when you play it yourself, and if you're ranged you can run around and kite etc. I think it'll feel more like WoW for you.