Bounty Hunters are not included, for they would have no authority in Gallia. Bounty Hunters can only hunt people in places where they were given power to do so. 3 of the current houses (NPC-wise, not player-wise), granted the BHG permission to hunt people in their territory. Kusari is the exception. BHG do not have the authority to hunt anyone inside of Kusari save Shikoku (and Okinawa in coming version). Omicrons, Independent, and Border Worlds don't really have any governments, so they don't need permission in those locations. Mercenaries and Freelancers are the exception, simply because there can be Gallic forms of both. Gallic mercenaries and Gallic Freelancers, just as there are Bretonian and Kusarian ones.
Corsairs aren't, since they would have to travel through Bretonia (hostile), Kusari (hostile), or Outcasts (hostile). Going through Kusari and the Outcasts would require them to travel through a home system just to reach Gallia. Bretonia they will be in the middle of a warzone as they try to reach the Taus, and they are hostile to BOTH sides.. Not a safe place. Even if a few manage to make it through, they will be small and fast ships, since moving large transporting ships through such areas would be impossible. Plus they would then have to get BACK out, AND avoid the Gallic Royal Navy and Police. The entire area will be nothing but enemies for Corsairs, and Gaians as well. Only thing Gaians have above Corsairs is that they start right next to Gallia, meaning BAF will be less of a problem, and because of their neutrality to KNF and alliance to AFA.
Explorers would be discouraged by the Gallic Navy, but encouraged by the Council. So its a mix up there.