Thanks for the comments everyone.
Alright, here's my update, later than I wanted but not by much. All told, I may go ahead and build/paint his Assault Cannon prior to Gamesday, as I'm not satisfied with my OSL on the plasma coils, and frankly, if I don't build the thing while I'm motivated, I never will, and another magnet will go unused.
Looking at the pictures, I'm going to deepen the shade up by the white dot on the lens... Added to my little list of "cleanups" once the model proper is finished.
I stuck the Sun Wolf on the "shoulder", as that's my great company's emblem, and I wanted to tie him to my army that way, as if it wasn't going to be obvious enough on the battlefield. There's a little bit of knotwork on the top of the shoulder plate, which I forgot to get a shot of.
On to to the claw arm tonight. Thanks for looking!
