"The main reason for the "leave" vote was democracy/sovereignty"
No, it was immigration, according to Arron Banks (who bankrolled leave.eu with his own £5.6 million):
"The Conservatives are now trying to rewrite the campaign that immigration wasn't important, but boy was immigration important,"
"The first thing we did was poll everybody and we found that if immigration wasn't the issue, the issue was schools or education, proxies for immigration. It was the number one issue by a country mile,"
This why politicians are having such problems coming up with a Brexit strategy:
ANY form of Free Trade with the EU will require Free Movement, which is totally unacceptable for many Leavers.
So the alternative is return to the WTO rules, quite feasible in the longterm, but will cause some years of economic downturn
A General Election would let the Tories spell out which Brexit option they plan and obtain a mandate for the tough actions they will need to take.
Labour can give their alternative; Liberals theirs for Remain.
The public then chooses their preferred form of hurt.