Ignoring the massive cost, legal hurdles, and the opinion of the residents/government/outside powers, if you could magically grant independence to certain territories or form new bigger nations from existing ones with no repercussions to yourself, what new countries would you create?
Please treat this as a non-serious post, let’s not get into a massive political debate, those never end well.
In the same vein, Catalonia. The “principality" for sure, with Northern Catalonia (currently in France) and the western strip (currently in Aragon, Spain), with or without Aran (if we can decide our future so should they, though an independent Occitaine is probably a pipe dream, so I’d be partial to a confederation if it’s fine by them), open to a confederation with the rest of the Catalan Countries (Andorra, the Balearic Islands and Valencia) if it’s fine by them; the people in L’Alguer (currently in Sardinia, Italy) should be able to decide if and where they want to fit in.
Also Scotland, though they’re not split.
Any nation without a state that wants to have one (and would have the means to survive as one, but there are some pretty small states out there and most of the ones that aren’t sinking under the sea seem to be doing fine), really.