I don't think it would actually happen but I think it'd be really funny if Thana did end up joining but as something more optional. I totally agree with Asherall. It doesn't have to be a lose-lose situation- it'd be more of a concept of a secret unlockable companion. Or instead of getting a starship, maybe people who passed up Thana get the option of a different secret companion that people who took Thana can't get. Since this game revolves around choices, it'd be cool if your choice could affect things that much. But to be honest I was thinking a lot smaller, like buy Thana from Cartel market XD
I mean, this doesn't seem too different from Sith Warrior class.
A starship would be so hardcore though