Federal European Union

NUTS1 map- highly centralised countries like France would likely oppose it.

Please give the President as little power as possible, so we can send the figurehead to receive highest honours in Kazakhstan or Chile without obstructing any important works.

I don't think it would particularly suppress nationalism, but it would push capable politicians into European level, make division of natural resources (CAP, but not only that) more palpable.

Arrogance of some government claiming to represent 50 million people is unhelpful and largest NUTS1 has 16 million, I think.