In an interview about a month or so ago with Crabbok Luke Eddy was talking about subfactions and how there are so many ways to implement subfactions into the game. He didn't give any hints as to how they plan to don it but I'm curious how does everyone think they will do subfactions?
I think they have all ready shown us how with the mando units in the rebel faction. They dont have any special rules or fancy subfactions keywords but they synergies well together (clan Wren with sabine). I think subfactions will be just that units that fit well together both thematically and mechanically, without any sort of fancy subfactions keyword or rule.
Heres a link to thr interview if anybodies interested.