I dont disagree... problem is to solve the problem, you would need to go into even deeper EU integration or dissolve the EU and any cooperation and basically go back to the dark ages. In the later, the radicals would win... I just dont see any easy solutions.
Take the refugee problem. It can be easily solved with an EU wide asylum policy and cooperation in getting extradition agreements with refugees (economic or not) countries. But I dont see the member states going down that road. Denmark for example has serious problems sending home criminal Egyptians, Algerians and so on due to the bad deals with have with those countries. But I dont see Denmark at all wanting to agree to an EU wide asylum policy that would put the who 500 million person EU economy behind a demand that these countries take back their criminal citizens. On the flip side, leaving the EU would also not solve this problem for Denmark... nor stop refugees coming to Denmark.. Only leaving the EU, UN, NATO and the Human Rights convention and turning the Faroe islands or Greenland into a massive Australian like death camps would even remotely solve the problem according to those scapegoater types.
Yeah, I see this problem.
From the top of my head, my idea is the following: If the EU just tries to defend the status quo, it can only lose. It will decompose. It has to go on the offense.
That means more integration, but in a manner that addresses the issues many have with the EU. First step: Admitting that the status quo is flawed and has to be changed.
Two main fields come to mind: The democracy deficit of the EU, and the social imbalance (connected to euro crisis). Solve these problems once and for all in a kind of "New Deal".
The EU and its supporters should stop pretending you can have both, democratic legitimation and absence of federalist elements. It's just not true. A main problem: The only way voters in the EU can currently influence the EU level, is via national elections -- they elect fellow national citizens in nationally framed campaigns. Even the EU parliament is elected by national elections in the member states. That's a huge flaw. Have EU offices (such as Commisioner or Council President) *directly* elected by the EU peoples, either by "every vote counts the same across all member states", or incorporate some kind of electoral college system to balance the influence of the members. Have different candidates representing different ideologies/parties competing against each other. Maybe even Council members (currently the respective ministers of the member states) could be replaced by US-style "Senators" of some kind, which are directly elected in the member states.
Second: To the economic integration, add social integration. No idea which approach would be the best here. But the entire fiscal problem has to be addressed in one bold, encompassing step forwards. IIRC, that Macron guy in France proposed something along these lines.
Personally not a fan of referenda, but if you have referenda after all, let them have EU-wide and not in individual member states. When more than 50% of the voters across all EU countries say "yes", let it be "yes".
Just a few rough ideas.
I also see this won't be possible when all 27 members have to agree. So let's go to "integration of different velocities". Let a hard core go forward, and all who are weary stay behind. They can join later if it's a success.