The EU countries are not too different to operate under one federal system. Countries as diverse as Vermont, Texas, California, Alaska, and Florida do fine here. A properly-designed federal system (NOT to say we have one) can accomodate the differences -- that's what representation of the people by their representatives is all about.
Regarding the constitution, it's just too darned BIG and LONG. While I understand this is due to civil law system concerns -- which I admit I need to learn more about -- a 500 page documents isn't much of a "framework" but rather a "spell everything out" effort. We'll see how this goes, but I'll bet dollars to drachmas that the EU establishes a permanent "constitution review/reconciliation committee" to constantly monitor EU rules and regs for conformity with the Constitution and to constantly analyze necessary amendments.
Probably a good thing in context -- my experience is that Europeans are fond of paperwork.
__________________

|