Well, as mentioned in that one thread of mine I went and rigged it so I could play the Bugs and Humans from the SST mod and it worked well enough. They don't have any flying units, but they do pretty good with the Plasma Caves and plain old guns.
I did try to add in the musketmen and Nihilirian units, but ran into a bit of trouble when my attempts to change vital stats were met with messages about not being able to find the XML file (that I have up in front of me and just changed) and not saving properly. By the way, I was also trying to change the names for the musketmen mod when I met with the same problem. My father did give me a nice suggestion for the soldier unit's name though: Cannon Fodder.