If I can intervene in the debate, I don't really see where is the historical signifiance of a splitting of the french culture. Provencal culture has been integrated for one or two centuries, and I don't see where could be the alternative.
To weaken France (a little, after all this kingdom stayed the most powerful in population and wealth), I see two credible things :
1) As it was said, remove (until events) shields on Britanny and (maybe) Roussillon. The second is not a need, but for the first it could be good : after all, this is only because the king acquired the legitimacy of Duke of Britanny that he was accepted, not before. So, wait until wedding of Anne (and later if Anne choose the Habsbourg pretender).
2) Add some hard events of revolts, very soon in the game. French kings fought all along 15th and 16th centuries against nobiliar revolts (sometimes with the addition of religious reasons, as during the wars of Religion), and this is the main reason why French kingdom don't expand more despite his enormous advantages.
So we can add some times of troubles, more or less powerful : Praguerie in 1440 (not really great troubles, avoided thanks to Charles VII), Ligue du Bien Public in 1460 as precise events, but also some random events specifically hard, to illustrate this constant noble agitation.
To weaken France (a little, after all this kingdom stayed the most powerful in population and wealth), I see two credible things :
1) As it was said, remove (until events) shields on Britanny and (maybe) Roussillon. The second is not a need, but for the first it could be good : after all, this is only because the king acquired the legitimacy of Duke of Britanny that he was accepted, not before. So, wait until wedding of Anne (and later if Anne choose the Habsbourg pretender).
2) Add some hard events of revolts, very soon in the game. French kings fought all along 15th and 16th centuries against nobiliar revolts (sometimes with the addition of religious reasons, as during the wars of Religion), and this is the main reason why French kingdom don't expand more despite his enormous advantages.
So we can add some times of troubles, more or less powerful : Praguerie in 1440 (not really great troubles, avoided thanks to Charles VII), Ligue du Bien Public in 1460 as precise events, but also some random events specifically hard, to illustrate this constant noble agitation.