[Imp]

Possible idea as OOB’s are easy to swap out and returning to default seems to work without any glitches might be a downloadable place holder OOB you could just swap with say red or green.

Would not be perfect but has a “default” pick list along with placeholder formations. These ones can be modified but not deleted. Not sure how pick list works but if needs be could also list slots you need to place the units in.
Infantry 1-200 etc. Possibly 2 different picklists regular army and terrorist.
I don’t know how picklists work though it might be a case of the best option is modifying an OOB that picks formations you want.