The pound has traded in the range $1.273 to $1.283 in the shenanigans of the last week. The money markets are placing the pound vs dollar at $1.38-$1.42 if there is a referendum and remain wins, and at $1.20 on a hard brexit. If there is a GE and Corbyn gets in, they are placing the £ in the $1.10 to $1.15 range.
The question is whether you can, and the obvious answer is that you can't.
All in good time. That is what our electoral system is for, imperfect, though it is. The electorate can sanction the government. The electorate has no realistic means of sanctioning the EU government.
Not only because the UK is obviously clearly showing it can't, look at the state you're in, but more because the world faces different problems that can only be solved by working together.
A simple example: the European electrical grid is being enforced as there may be a surplus of wind on the North sea, and a shortage in Spain, or the other way around.
Each country by itself is too small, compared to weather conditions, to easily conquer renewable energy by itself.
Another simple example: The USA, China, Russia.
The EU can match them, our old world small countries can not.
Another simple example: Google, Facebook, Cambridge analytica. Companies that are more influential than countries.
You need to think globally to conquer global issues.
These are all perfectly valid points, with which I don't necessarily disagree. However, to achieve these things, do the the EU member countries require a parliament, two parliamentary complexes in two different countries, at least 5 presidents, a complex and indeed almost impenetrable hierarchy of institutions, a plodding, centralised, unelected bureaucracy responsible for creating the laws throughout the bloc and a centralised court of justice to enforce them, a common currency, a centralised trade policy, a centralised regional funding policy, a common foreign policy and an army, and indeed all the trappings of an empire devoted to top-down rule-making, ever-ratcheted unification, and a communalised culture, none of it capable of being subject to the democratic wishes of the people?
Your answer may well be yes, mine will be no, albeit a nuanced no. I believe that most of the needs of Europe, even in the world in which we live, can be decided by the governments of independent sovereign democracies working together by bilateral and multilateral agreement, whilst remaining subject to, and with the consent of, the peoples of those independent nations and states.