Nowadays you'd have to find a 'killer application' for the Rotodyne to be resurrected and there simply doesn't seem to be one.
Re the killer app, have a look for the Flight article to which I referred. The Eurocopter head was talking about large capacity VTOL flying short-haul routes as an alternative to building additional runway capacity, with all its associated costs and timeframes.
JF - you've lost me there.