I think a lot of the crew are attached to Yaichiro, who hasn't yet made up his mind. I'm hoping he'll either stay with the Asuka or take the ship designer job Yui's offering him, but the UOC dudes are blinded to the benefits of the tech exchange (teleportation units, future KFY tech, etc) due to hate and mistrust and it looks like they won't approve him working for KFY at the same time as MFY, despite Yui saying it'd be okay for him to work for both at KFY.
I've been working hard on improving Yamatai and I'm hoping Yaichiro will see that and be inspired. Since Himiko got the throne, Yamatai has already done a lot to improve itself, like disallowing slavery, torture, and murder of civilians, and starting a civilian-oriented policy instead of a military one. I realize that the UOC's ship design field is wide-open but remember Yamatai's is still open too. We need a new main escort ship design, a new battleship, and many other designs to replace the oodles of old ships now being disposed of.
Remember this is your decision as a player, not Andrews or mine or your players.