Even though my vote was to get out now, if I could be sure that any new organisation would be truly accountable and not open to the obvious abuses the current EU is suffering, I would be inclined to opt for a new organisation!
I'd trust the Scandos, cloggies and one or two of the ex-east Europeans countries to come in with us on some sort of transparent and efficient voluntary trade & energy alliance, but there is no way the EU colossus and its federal empire-builders can possibly be partly unwound or persuaded to back off their lust for power. Much as I like the PIIGS, they are still generations away from achieving the socio-economic level of the northern industrial countries, and thus cannot be part of any economic bloc. Although we Brits have many common bonds with the French, we have totally opposite traditions of law and democracy - and hence cannot be part of a Federal state together as one or the other would have to ditch about a thousand years' worth of cultural and legal development.
I think the EU has to go, and then the resulting power blocks agree to salvage some of the useful bits from the rubble (e.g. standards system, free movements of goods and services where possible, etc)