I suspect that I'm missing something, but what's going to change? (All from the PPL side, mind you, not CPL/ATP).
FAA
PPL to JAA
PPL has never been much of an issue. The UK has the 100hr route where you do 2 or 3 exams and a flight test.
The issue is with the IR, and for bigger hardware you have the CPL/IR and ATPs to convert. This much more work.
The problem is that N registered aircraft living in Europe will need to be registered in Europe (and therefore will need to be flown by JAA licensed pilots).
Not under current
proposals. See table on page 9. SE and ME pistons, and SE turboprops will be able to stay on e.g. N-reg and be maintained to FAA Part 91 as at present. ME turboprops and jets will have some extra hassle, but foreign reg airframes as such are
not being evicted as such. One thing is that to park in the EU long term the airframe will need to have an EASA type certificate; this does rule out a few types but not many.