GRN is allowed into Bretonia and surrounding systems, you are not.
You cannot go into Leeds or Magellan. Nor are you allowed in Kusari. You have the Gallic house and the Taus. That's it.
Now, you seem to miss the point when people keep saying "GRP is corrupt." You cannot just say "We aren't anymore." That's like saying Bretonians should all stop drinking tea. The Royal Police has and always been corrupt down to the core. With the war, the Royal Police does have an actual job protecting Gallia proper. There was even talks of them waging war on the council in Champagne.
I'm not tell you to go out and be brigands about it, but to deny the factions RP is you just abusing the ID to create something it's not.