Sounds cracking, I'd love to help out but I fear I wouldn't be much use in the modelling dep.
I wonder if there's some sort of method of isolating the DZ/TacRef Flashes and then changing between those depending on the unit selection, whilst using the base uniform for each one. I feel like it'd be somehow possible with the modular clothing system, though I'm sure if it is it'll be a hassle to sort out.