Well my two cents on him… as he currently is I do NOT like him. He simply takes up too much time with his special skill animation display and the time the minions are firing, doing far lesser damage than I could be doing otherwise.
He is good in the aspect that he is fast and relatively strong in all aspects. If you are doing mapwork or a raid where time doesn’t matter, he isn’t as detrimental.
I also see the issue with him dying and his minions still remaining alive still persists. With the minimal damage they do, being unable to effectively use them because after the first one, you can no longer target with them, and the extra time involved, I feel your score will be lower in any timed event you enter.
Hope this helps. Good luck.