Even if Maybot, Davis, Fox, Johnson et al manage to wrangle a deal whereby the UK is allowed to set it's own FTLs, do you all really believe for 1 minute that the UK airline bosses would roll over and say "good, back to CAP371!"? It matters little what laws our legislators pass, proof is the current gender pay difference machinations over a law passed decades ago but ignored by companies subject to UK law.
EASA has been a boon to the companies' rostering practices, sweating more work out of the assets and allowing less rest thereby making the profit figures look good. They are NOT going to accept from the CAA (who they?) nor the UK Parliament, a move back to more employee friendly practices so please wake up, smell the coffee and realise you're now in a worse place than before EASA reared it's Greek Mythology Hydra-like head.
Drifting sideways, if EU stops UK flying over/into their airspace, what proposals do they have when UK airspace is closed off to the newly found "enemy" in retaliation? A scan of FR24 any morning/evening will demonstrate the problem nicely when direct routes from/to North Atlantic airspace and EU no longer exist. Of course what remains of the century-old RAF will have difficulty in finding Typhoons & Tankers to police the patch, but that's for another thread.
Regarding the OP's concerns, I would have thought there are so many of "their" pilot flying for "us" and vice versa that the entire Western European aviation scene would collapse into chaos and stagnation. Once again, BIG CORP, who really decide what happens and instructs most governments as to what laws to draft and pass, will step in and intervene to ensure their financial interests are as undamaged as possible.
Those pesky peasants who buy and use their products and services should never have been allowed this semblance of democracy, it just gets in the way of smooth business expansion.
