It wont matter in the Colonies. Not while the Empire remains intact at least. We can hope that the Imperial laws will continue on even when/if the Empire falls.
But the hope is to give the infiltrators freedom of travel. They will be allowed to attack anyone on the bounty board... Not complete diplomatic immunity because they can still be punished when caught (although I do hope to find agreement on how bans can be bought so that infiltrators do not have to leave once they are banned everywhere)...but still its a good way to get them stronger.