and is the only one that has national licences
I know for a fact (from a friend who has one) that Switzerland is still running a pre-JAA national license. And there are going to be others too.
The UK (CAA) is a powerful player in EASA. France and Germany are others. Most of the rest of the EU barely participates. The UK will have a big say - this is a good thing in this case; it is a bad thing in others because it will hold back modernisation on things like the proposed EU-wide PPL with a possible IR which is scaring the national CAAs to death.