What we need is Revoke, Regroup, Reconsider.
That's the only sane way to go.
We step back from the brink.
We analyse truthfully what caused so many people to vote Leave, given that in 2015, when asked, only 6% put 'the EU' as top of their concerns, and given that the day after the referendum, the most googled term was 'what is the EU?'. These aren't 'Leavers', these are reactionaries. Who will have legitimate concerns. BoJo knows this, looking at his spending promises. To keep the random protestors On Message, while knowing that there won't be any cash to deliver the golden money tree post Brexit.
We, within the EU, tackle the sources of the inequalities that fuel this discontent. We go proportional representation. We reform taxation. We ban bankers bonuses. We tax second home ownership. We take charitable status away from private schools. We understand that while some 'hard working families' disproportionately enjoy the benefits of same, others very much don't. Etc. Meanwhile enjoying the benefits of EU membership.
In due course, we revisit EU membership ( while having, within the EU, examined how a member can leave without all this angst, being first to 'try'). And I bet, 10 years on, again, no one will care about EU membership. Thus we will remain in.