First off, I want to say that your decision to expunge the Yevetha as a playable faction is completely understandable. There are many imperial factions already in the mod, and going for more unique stuff like the Si Ruuvi or the Vagaari makes much more sense.
That said, I did want to give some praise for the BFC GC, simply because it has some features that seem different to the other GCs. It is small, fast paced, but also feels quite... personal. The majority of major Yevethan units are helmed by heroes, which means you will always be fighting the same major ships each time. Furthermore, the Thrustships are very difficult to deal with, making any attempt to take down the Yevethan SSD very difficult, almost like a puzzle boss.
I completely understand if the BFC cannot be used as a GC now, but am just checking if it is possible, in the same what that the Ciutric Hegemony is not a faction at all, but is represented by the empire for one GC.