A bigger worry than whether or not the Ashton Cinderella will come into repertory is whether Ashton's La Fille mal gardee will stay in repertory. Say what you will about Madame Lefevre but she brought the Ashton Fille into repertory in 2006-07 and then reprogrammed it in 2008-09 and 2011-12. (All this according to the POB Web site.) Millepied has no background in Ashton and it's not clear to me that Ashton will continue to have any kind of presence in Paris.
As for the Nureyev productions, Parisians should be careful what they go looking for. They might get Christopher Wheeldon's Cinderella, Sleeping Beauty and/or Swan Lake. Worse still, they might get Peter Martins's Romeo + Juliet (with the all important "+".)