If we voted out of the EU, we have voted for a return to full sovereignty so, we do not have to accept anything at all from the EU much less a 'residual EASA framework'.
We then gain an opportunity to sweep away ancient CAA cobwebs and draft a new system based on simplicity and openness and one that reflects the GA of to-day and not one largely formulated in the past and designed by men in blazers accompanied by more than a hint of class condescension.