Miliosr, don't you think his Balanchine repertoire connections were part of his appeal to whomever chose him?
I think that was part of it -- but only a part (and not even the major part.) I see his hiring as having everything to do with installing a glamorous head at the POB who could draw significant amounts of private funding. Given the parlous state of the French economy, finding other funding sources for the company is a priority. And who better to do it than the handsome Millepied and his movie star wife? That he makes dances and has connections throughout the international dance world to various living choreographers and successor trusts (Balanchine, Cunningham, Robbins) just adds to the appeal.
That being said, if he tries to jettison the various historical tendencies (Legitimist, Nureyevist, Lefevrist) within the POB in favor of imposing a New York-centric vision on it, I think he will fail. The person Millepied should look to as a cautionary tale is Mikhail Baryshnikov, who tried -- and failed -- to change ABT too radically in the 80s from what it had been historically. I guess what I'm saying is that moderation would be the best path for him as he moves forward with his plans for 2015-16.