You know, this is a great baseplate. With a few modifications, it looks ready for immediate commit. Namely, the "grid" is too subtle, and cannot be seen from normal zoomlevel. Can you make the gridlines thicker? I think the yellow lines could stand to be slightly thicker, too. It might simply be a matter of following Pumpkin's style more closely.
Can you make those changes and send it over?
We'll need to discuss licensing. I'm a fan of CC-0, but GPLv2, CC-BY-3.0, CC-BY-3.0, or any less restrictive license is fine.
I also have some feedback for your cyborg factory:
I think we can get away with just having the "A" parts stick out, and just paint on the "D" part in the textures.
We could also add the "B" fan into the model; I think that'd look good. And the C parts - I think they're supposed to be domes. Do you think that'd look better?
And the baseplate - I assume those lines are part of the texture, not the model? It really should be part of the texture...
Other than that, it looks great.