Md 600 driver
If all this rubbish ever came into being which I doubt!! You would require a basic PPL H EASA variety to run alongside your FAA Licence.
Its the guys who fly N reg IFR who will have the biggest problem.
Private jets will not have a problem it being easy to operate outside Europe.
The guy running a private single MAY have a problem but I could well see a scheme put into place which is cost effective for the small guy to take that operation out of EASA land.
But hopefully we will never get to the stage of being forced into doing things like that!
Pace