To be honest, the Gallic Junkers have simply taken advantage of the situation. Their biggest goal is to profiteer by any means necessary, which before Reunion, meant supporting the only pool of cash, the Government. But recently, with the Outcasts making their move into Gallia and other factions suddenly becoming interested in Gallia, there are a lot more ways to profiteer. My favorite example is the possibility of using Cardamine as a way of taking over the Gallic Black Market while showing their Unione Corse enemies who's boss. Of course, they can continue to support the crown, which is still profitable, but they face the social consequences of doing so.
They are one of the only factions that has the potential to have a diplomacy that makes them friendly to the Government and one of their enemies and it shouldn't just be re-purposed.