Living in one of the PIGS, I can tell there's not much going on here about leaving the EU. Nobody has seriously brought it up. That said, I see important problems in the EU going on now that must be solved:

1. I know the EU is completely against the "two-speed Europe". But that MUST be put in place if the EU is to survive. There's a clear divide between regions in the EU. It is a cultural divide in the way work is seen, perceived, in the way money is handled, on how corruption is seen by citizens, etc. That's why after decades the economies of the PIGS have not adjusted to the rest of the EU, and they probably will never adjust. It's a cultural thing that won't change.

Also, I suppose rich and poor countries don't equally agree with the amount socialism/interventionism the EU should be establishing. For example being from one of the PIGS I like interventionism from the EU because I see local politicians/courts/etc as useless. If you go to court and the verdict is stupid, you can go to a European court. But I suppose people from the north like their local politicians and courts and don't like it when the EU interferes.

2. Many people don't like immigrants. Whether that's racism or not, or whether those people can be educated or not... that's irrelevant. The EU is literally shoving immigrants down people's throats. Immigration from A8 countries MUST be regulated (end of Schengen) and also countries should be able to decide if they want Muslim refugees or not.

Remember this is just my opinion and what I've seen around me as a citizen of one of the PIGS.