What you mean like that other federation of states?
Well I suppose historically if it's successful then.....yes.
Perhaps the saving grace may be that local populations are much more rooted in their cultures than our current example of a 'superstate'.
As far as the Scots go, I have lived overseas all my life. There is no WAY that Scottish culture will disseminate. They have colonies everywhere, and remain the same. And they have been dwarfed by England for centuries but are currently running us;-)