[Erax]

The Organians would be an Ancient Neutral race (weird, huh ?). The Q... I see them as an event sort of thing more than a race ("Q moved one of your ships across the Galaxy." "Q has opened up a new warp point.").

Regarding 'wanderers', how about calling them Rogue Races ? The SW Bounty Hunters Guild and various smuggler organizations would make good rogue races. The Black Sun might be true P&N pirates. The Orions could actually be two separate races, one pirate race and one 'normal' race.

If you want to beef up the pirates/nomads/rogues, all you have to do is give them limited colonization capability.

I'm actually reading the back Posts on the P&N thread, I'll post some ideas there eventually.