The biggest problem with the EU is that it is built for bureaucrats and as such it is geared towards irreversible "blob" decisions. Brexit should have been a near no-op. But it was a huge pain. They hadn't even planned for it or thought about it. EU should have a pre-memeber clearing state that countries stay in and then vote every year or n years to be "in" or "out" of the EU. But part of being in the EU should be t…
How was it ever going to be a "near no-op"? Putting everything else aside, Northern Ireland was always going to be huge sticking points. Ireland would make sure it was.
Besides, it was in the EU's self-interest to maximise the pain for the UK, in order to discourage other member states from going the same way - and the EU succeeded. Marine Le Pen no longer talks about "Frexit", instead she proposes reforming the EU from within.