Too much autonomy and the Internationale ideal becomes all the harder to move toward. It's already hard enough having a Europe with a trojan horse of English manufacture working hard against; regionalizing further complicates things (and bear in mind that autonomists do not tend to be Internationalists or Europeans, in fact, quite the contrary...)
All this being said, I recommend this diary on the basis of a pretty cool-looking map and all those cool looking flags (though you could write a diary on the historicical bona fides of regionalism by researching some of them. I think the Breton flag, for instance, is of quite recent vintage, probably spurred by the relatively recent drive to make French not only lingua franca in that part of France, but also totally supplant the Patois). Fai de bèn a Bertrand, te lou rendra en cagant
I think that some people took it that I'm endorsing the division of Europe. I'm not.
I'm agnostic on the morality of the issue, but I acknowledge that it exists.
Outside of Spain and the UK, I relied heavily on wikipedia. Hence some of the strangeness. I suspect that federal and federalizing states are more supsectible to division. And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg