Pilots from outwith EASA land should be treated no differently from the way they were treated before the new rules came into effect.
As visitors, their licences and ratings should have the same validity as hitherto.
If they come to live and work permanently here, then they should be assessed in the same way as all EASA citizens.
Perhaps my opinion is already what has effect under the new dispensation, but I don't know and don't intend to research it.