Originally Posted by
Hyrist
Have the three nations remain the three factions in name only.
Treat the Adventurers as freelance mercenaries with fluid loyalties and can join whatever GC campaign provides them the work.
Lore wise, you can excuse it as the nations becoming desperate to fill their ranks to gain some sort of edge, and signing a release of restrictions on Adventures so that they may support who they choose to. This is not without precedent, the Grand Companies have, on many occasions, differed to adventurers for assistance regardless of allegiance, even when their interests were in question.
No reason to impose players for the lore restriction on characters.