Burgundy was slavishly devoted to Adelaide, he called her 'his Draco' (after the Athenian lawgiver), so I think she might end up running the show as a sort of king in petticoats. As to Bretagne, he's pretty much a blank slate. Hell, even OTL Louis XV would be different due to his immediate family surviving. Half of the reason that he became what he was, was due to no one understanding his desire to recreate that family closeness that he had never had. - from Antonia Fraser's Love and Louis XIV
Secondly, shortly after he became king in his own right (1722) he tried to remedy the financial situation of France by laying off a quarter of the palace staff. He was then informed that this was not a good move as these men's families were now lost without a source of income (no one seemed to be thinking of the French crown to be unable to support many superfluous positions). So, Louis promptly hired them back on. As a result of this, he began to be of the opinion that everyone else always knew better than he did, and that whatever he did was wrong or didn't matter... - from Nancy Mitford's Madame de Pompadour