A brief History...

[marauder]

I suggested the xeno tag beacuse only two factions are neutral to them.

Everyone is only in sirus because it was the only way to escape the coalition, how do you think they'd react if they found some of those coalition had arrived with them?

Yup, they'd do everything they could to kill them off.

As the xenos are hated by all but two factions they'd fit in with your RP much better the the corsairs who are only hated by a handful of factions.