This sounds great! You can play Loire and  the crimminally minded captain pal of Valko, while I play the Crux twins. We'll all still be on the Lucidae, a realitively small starship... I like the idea of a later character bringing on an AI (hopefully if Nariata ever comes back i can rope em in on that, seeing as we'd already had plans for a quazi-murdurously minded ai bot that was a glorified dj-roomba LOL) so i'll leave that in the potential future. 

So we'll have a not-quite hostage doctor riding along with viva as she goes through the motions of being morally-conflicted between home'n'family, and her captain'n'brother's jerkwad actions. She'll eventually decided to jump ship somewhere along the way, probably with the doc in tow.  I like the idea of them stealing a shuttle and sneeking away in the night or something. Whatever works best with whatever story we cook up. 

Do you want to do charactersheets for this? I can tweek Viva's and throw one up for Valko if you like. And I left Valko's Buddy Captain a blank slate so feel free to make it what you like (other than the fact that they are pals and are both royal jerkwad crimminals).