The 1707 Union created the Kingdom of Great Britain. 1801 created United Kingdom of Great Britain and Ireland. The creation of the Irish Free State in 1922 gave us the United Kingdom of Great Britain and Northern Ireland. So if Scotland leaves, the Kingdom of Great Britain ceases to exist. "Britain" ceases to exists as a political/national state. IMHO any reconfigured UK after that is an absurdity.
Are you implying that European Union shouldn't be called that because it does not include all of Europe's countries?
I assume no, so perhaps it's ok for a Kingdom of Great Britain not to include all of it :)
FWIW, Serbia almost kept with the Yugoslavia for as long as it had someone to unite with. It did turn into Serbia and Montenegro in 2003, before ultimately splitting in 2006.
It even got a first case of ISO country code reuse with CS (hi Czechoslovakia), but I don't think there was ever a TLD .cs for it.
