Been playing a fair bit, great so far. One problem I am finding is getting stuck on mobs when trying to kite. In Path of Exile for example you can set your left click just to be movement rather than an attack, stopping the problem with getting caught on mobs when trying to kite back. The more I think about it, I can't help but feel that the control system would suit a WASD set up much better. That way you could be aiming, while moving together and still have full control of your aim. Rather than when you are moving backwards having to keep clicking behind you then shooting forward.
Let me know what you think