The EU membership will most likely come with a change of currency, which means leaving the BoE for the ECB. Given the ECB's track record and it's inability to do what a central bank ought to do - protect banks from bank runs, devalue, etc. - I believe that it's suicidal. The QE was was a joke. Surplus recycling is nowhere to be found in the European Union, vis-a-vis Germany Scotland will have deficit, hence it's doom…
The EU project is a political one (encompassing things like currency, fiscal and social union), and not just a single market like the most liberal English right winger want it to be. The referendum is a plebiscite for this politic, even though it seems that part of the electorate has been conned into voting to leave.
IMHO you're misunderstanding: Listening BBC Radio 5 the last couple of days I can say that lack of transparency, austerity promotion and the way countries like Greece (primarily), Ireland and Portugal were treated in 2014 and 2015 by the EU played a major role in turning voters to Brexit.