It's still not clear to me why would I be interested in the mission of this ship. Is the ship able to maintain our lives for another 40/50 years? My character is what, 25/30 yo? He doesn't have children, so why would he care? He actually wants all the other people on the ship to be his puppets and then, right after he dies, the ship should just be engulfed in a huge fire that kills everybody else. Basically, what I want to know is: can I just grab total power for myself, instead of supporting some stupid faction?
The ship seems to be teetering on the brink of unlivable catastrophe one way or the other, no?
"Here are 3 factions with tradeoffs, or I can just backstab everyone, take all the power, and make all the right decisions as a basement dweller Philosopher King" is the stupidest shit in RPG design and must be eradicated.
I would, however, support a ITS way of doing it, where you destroy the fragile balance and small upsides each faction had wrought because 'you know better', and turns out you certainly didn't have all the right information, and you must nevertheless hobble forward to a very suboptimal resolution while pretty much everybody you meet hates your guts for being the dumbass know-it-all who came and fucked it all up.