I am all in favour of Catherine Deneuve, Princess_Olga, she did a nice try in her latest movie :)
Brigitte Bardot can be her excentric aunt who talks to the press to often about her niece.
As for the crownprince....maybe Olivier Martinez? If he marries Kylie it will be an other Aussie successtory in royal europe
But seriously, I agree with you, the chances on a restauration in France are extremely small.