Provided you're OK on point balances, the SDLF players could use single-model companies. A company of Locusts, a company of Griffins, and a company of Archers. It's very SLDF. Or maybe, for more fun, use lances of the same type.
Rim worlders, you just want to make the world burn. Flamer city!
The MUL is, as always, your friend.