I will be pushing things on in the next couple of days if Echo doesn't post.

Nah, the sergeant needs to be an Uslamer.
Anyway, for anyone else considering getting on, what we're really short on is a sergeant of some sort to take command temporarily and women. Hopefully, those requests can be filled.
Yeah, the pirates, like Slooga, are not the focus of the RP. Characters need to be members of the platoon. If your character wants to go from pirate to platoon, that works, though I'm not sure how it'd work if he were intruder crew. Maybe they took him as a replacement when he pissed off Slooga, and the platoon was like, "Welp, he's army. So he's our concern, not yours."
I think that an ex-pirate is a fine addition to the group, but yeah, this is a 'regular' (as much as such applies in the Alliance) 'line' (same) unit of the Rebel Alliance Army. There's no doubting that someone with a background in piracy can be very useful, but these characters are part of a platoon in the war as a matter of organizing the whole thing to keep it cohesive.
Edit: The Intruder could easily be an ex-pirate ship, however, crewed by ex-pirates. That'd make for an amusing backstory as the opinion of the infantry about the freebooting supplemental activities of their Naval counterparts is less than legal in a lot of ways. Also, black marketeering, which goes hand in hand with the Hutt someone proposed as a character. It might just be the remnant of a Hutt Cartel operation that had nowhere to go but the Alliance Navy, especially since someone else proposed a Hutt on board.
That'd give the whole ship a sideline -- black marketeering and various profit-motivated enterprises as a supplement to their naval operations. They'd have to cut in the platoon, as they're the boarding force and security.