After a lot of tinkering on wowhead, this is what I came up with - my first choice I think had more visceral appeal, but A) the boots really didn't tie in well, and B) in any case, I'd already done the quests for that chest & leggings.
The new goggles were relatively easy to fabricate from leftover mats and a few bits on the AH, and the cloak was a cheap vendor item that happened to tie in well. While this set may not have quite the same BANG to it that my first pick did, I do like the way that the muted gold and blue of the new chest and leggings tie into that of the gloves and boots, resulting in a more sophisticated blend imo.
(Gear list below the pics)
EDIT (v3): current look, with new beard & belt. I felt the previous beard style obscured too much of the chest, and I also wanted a belt with stronger lines that would anchor his center better, so I used the Protector Waistband;
Previous look (v2);
Gear list:
Truesight Ice Blinders
Volcanic Pauldrons
Well Oiled Cloak
Chestguard of the Naz'jar
Hellreaver
Armor Plated Combat Shotgun
Earth Mantle Handwraps
Girdle of Living Flame
Legguards of Revelation
Magma Plume Boots
