Okay, I'm fully willing to accept the possibility that I'm just an idiot who doesn't understand how to use this mod, but I have to ask something.
After applying the "United We Stand" hullmod to a ship and re-entering a market, the only crew bonus I get is from Interstellar Imperium. I am not commissioned under the Imperium and there are other factions my relations are better with (if I understand correctly how it's supposed to work). This happens regardless of the ship design or the owner of the market I do this at.
I'm not sure what causes this, an incompatibility with a mod like Starship Legends or faction mods w/o Commissioned Crews support.