" It just ignores reality."
Or it acknowledges reality as it is. (I have seen lot's of europe)
I don't see a need for universal regulation of everything, which of course will get messy and weird.
I do see a need for standardisation of infrastructure. Track gauge of railways. No expensive roaming for telecommunication. Energy grid. Education certificates. Europol. Those things - and the debate there can also get exhausting for sure, but must not be.
But whether I will buy polish meat in what shape, or french cheese in what condition, is something I would like to decide on my own and don't need EU intervention. So no debates needed there, no complications of things that need no regulation.
I also don't see a need for a parliament that big at all, or actually a european parliament that has to physically meet in the first place. So expert comitees, that work on the bordercrossing problems yes - and then all the local state parliament can legalize the implementation.
Pretty much what is happening right now, just with less complications.