I actually don't much care for this skin. I think you're all letting Falco's reputation as a skinner cloud your vision, because the skin itself is nothing to write home about.
The skin is a mess of red, black, orange and yellow with little to define it. Due to lack of contrasting elements or solid division of parts, especially important for games like RTSes where you have little tiny units with limited model detail, it's hard to make the eye focus on any one thing in the concept. The overal impact for me when viewed is essentially "That's.. a mess."
On the positive side of things, the way the face is done is pretty good, though the yellow spot on the tip of the upper lip is a bit strange. The pauldron is a step in the right direction, but I would actually recommend you switch over to something like metal of a blackish tint, even though it doesn't make sense knowing that stone generally has a higher melting point.
Compared to your usual stuff, Falco, this is kind of lacking, but I do like the concept.