I think the defensive changes will make a big difference, but also, depending on when you fight him, the smoothing of NPC power gains should make him easier too. I'm going to try him tonight, I think And if I fail again...maybe I'll go work on my Treant L&L quest and see if I can spank him that way
He's a joke now. I think I burned him down (on normal difficulty) in about 20 seconds. Also... Devastation Fist at least took a swing at him. It missed, but it looks like we might be able to deathtouch him now.