Well not quite, but something we talked about with regard to the Galaxie MTB Lift Pass
http://pistehors.com/news/forums/viewthread/333/
and looks quite interestings. Half the Pyrenees ski resorts now belong to groups and with a season pass you can ski in any member station.
i. Neiges Catalanes gives access to 8 resorts including, in France, Font-Romeu, Les Angles, Porté-Puymorens and Cerdagne-Puigmal.
ii. N’Py groups Gourette, Peyragudes, Pierre Saint-Martin, Domaine du Tourmalet - Pic du Midi, Luz-Ardiden and Piau-Engaly
and finally
iii Altiservice: Font-Romeu Pyrénées 2000, Saint-Lary, Artouste, Luchon-Superbagnères and Guzet.
Font Romeu seems to be in there twice, I guess it depends on whether you want to cross the border into Spain or not.
Season passes cost between 470 à 550€. It is an idea that we would like to see adopted by more second tier resorts.