I’m not convinced the EU is monolithic enough for bad blood to matter, there’s enough member states with enough history that someone will always have issues with someone.

What I do believe will be a point of contention though are all the special dispensations the UK have had. With the power balance as it is today, UK might have to face membership on equal terms with the other member states this time around.

Lol, did you notice you can opt out of tracking cookies on Meta, or that iPhones have USB-C connectors?

EU regulations got some pull. And also give a fair few fines.