Personally I like the wire frames to be team colored. I think the nanolathe looks neat, but perhaps it should still be green to match the build arm.
Though not present in any specs, I did add new unitypes: UNITTYPE_Custom1, UNITTYPE_Custom2, UNITTYPE_Custom3, UNITTYPE_Custom4 These are intended for modding and will not be used by the base version of PA.
How about also using the secondary colour in nanolathes. The classic green one also had 2 different kinds of green
If there's too many then you'll end up having nobody playing any. (Basically there will either be a couple really big ones and a buuunch of ones nobody plays, or a bunch barely anybody plays, or just like two or three really huge ones. )