The rest rather put me off until I realized I found the 'action' poses looked so awkward that they'd be easy to work up as clockwork automatons. I always envision the tech as completely a work-in-progress. Either slow and stolid, or always on the edge of falling over.
Edit: Think of the annoying Martin Short-voiced robot in Treasure Planet.
The 'garments' make me think they'd be fine additions to a Papal force, such as Governor General's group.
The spider walker actually makes me think it should be split into two vehicles. Each would require a fair amount of parts, but it dilutes the pain of Evil Empire [tm] prices. Maybe the top on some cheap toy tank tracks? Train locomotive?
Dewbakuk: Not sure what part is 'weak', but certains not skill and imagination.

I'm a big admirer of that conversion.
Doug