I mostly have problems with the corsair since I believe, from my experience on server, the Xenos believe they are doing the right things, and shouldn't be allying themselves with notoriously known pirates that can kill for mere fun...
Again, from RP experience, I believe they fit better with the unioners, as they seems to be claiming something about being out of job and all... and historically, these kind of group has been known to approach the socialist way.
While I admit Xenos will probably hate rheinlanders, they could recognise they have a same goal here (or, a certain ressemblance), and even if they are not that much of friendly, they could supply and support each others in their war respective war. And, lets not forget they are one next to another, between Texas and Hamburg.