The taboo is the notion that the European Union needs to be reformed (no pun intended!). I was a Remainer, and do not regret that, but I hoped the EU would clean house. (Yes, the UK should do as well btw. Scotland should be independent. The House of Lords, Whitehall and Royal Family need a major overhaul.)
As someone who's pro-EU, I'd also really like to see major reforms within the organization.
While it contributes enormously to the welfare of the continent, the EU is by design dysfunctional and toothless.
I'm a pessimist, there is so much money behind the forces that want to see the EU fall apart because small individual countries are easier to buy off, I don't see how we can defend against that.
We'll only know what we lost when it's gone, but then it'll be too late.
IMO, the only thing that will contain Reform is Farage suffering consequences for misconduct. That or being overtaken by even worse people. The two things…