Well, if gallia had most profitable routes inside it would trigger more traders to this part of Sirius. More traders = more pirates = more lawfuls appearing. Maybe an (in)active Nomad lair somewhere there would be a cool idea as well. Nomads in Gallia are thing to happen.
Otherwise add another 'new' faction in a 'new' area which will be at war with Gallia. Problem solved, we just need some new shippies
