Back in Summer of 2001 before September 11 the Association of European Airlines launched an initiave toward the same goal: to create a framework of assistance to passanger that would not put an undue burden in the operation.
Obviously the thikns change in the months following the attempt but there should be some support for pax blocked in some airports. At least towards providing food and beverages... However it is important to avoid at all costs a deterioration in safety due to press-on-itis (the desire to complete the flights at all costs).
Rwy in sight