Oh boy I love this. It's a very subtle edit, but quality is neat. I love what you did with spinning weapon - it's cool that you didn't just forget about Stand Ready animation, but edited it to fit the new concept. Helm edit is nice too - enough for it to pose as a new unit. I'd change the angle of camera so that it looked even more like a brand new unit though.
Haven't checked texture animation though - Hive Viewer glitches it to hell and back, hopefully it works as intended ingame. Judging by what I see - lightning around his shield looks from center, not around it. Wouldn't it be better if it circled around the shield?
Also - you could make several versions with different colours of lightning. Blue, even purple (blue+red texture gives you a sick purple lightning, try it!). Maybe a heroic version too.