Re: "...North Korea of Europe..."
"Like Switzerland that well known third world country?"
Switzerland gets rather a mixed deal from the EU, that have to accept migration, payments into the EU funds without representation and ~ 200 other rules/regulations etc.
A rather limited BBC analysis : http://www.bbc.co.uk/news/live/uk-politics-eu-referendum-35603388 or better : http://www.bbc.co.uk/news/uk-politics-eu-referendum-35615604
And if Scotland splits and joins the EU are we really going to have border controls ? (We don't with Ireland AFAIK)