Great feedback. I've been wondering about the arms myself. Trying to figure out if some more archaic piping/gears would work better - and to cut out some of the existing cabling. We'll see.
As for the engineer, I have one of the old metal ones hanging around that looks all good and crazy. Only problem is that he's missing his arms (can't find 'em) and his right shoulder is positioned in an awkward way. I might try to green stuff it towards normal. Important point is that the engineer is not connected at the moment, so a swap would be easy.
I've also heard that it is still too orcish. We'll see what I can do about that in the future. For now, though, I might set him aside until I get a few parts in.