I don't think the CAA wants to kick out the N-reg community.
Firstly they would be kicking out the best quality end of GA. This will impact the whole industry, all the way to maintenance companies losing their best funded customers.
Secondly they are going to get sued by various professional pilots for loss of income caused by the demolition of a very long established operating regime.
But I expect the CAA (and others) to keep its powder dry till it's needed. EASA/EU is a bunch of clever b*stards; they've had 50 years of practice of dishonest wheeling and dealing under the table.