These approaches are mostly historically oriented. How about a more ethno-religious division (like in India and the ex-USSR)
1. Iberia.
2. UK
3. France.
4. Russia.
5. Germany
6. Hungary
7. Poland-Bohemia
8. Scandinavia
9. Italy
10. "Orthodoxia" (ex Ottoman Balkans)
#8 and #10 seem...INCREDIBLY difficult to pull off, judging by OTL's events (as a reflection of the kind of issues getting in the way).
See below for more detail on my issues with this, since it applies to either.
Or, with more multinational states:
1. Latin Union (France, Iberia, most of Italy)
2. Scandinavia (includes Ingermannland, Lettia & Estonia)
3. Great Britain
4. Central European Federation (Ex HRE, includes Czecho, Poland & Hungary. German - Non German balance. Kept together by LU &Russian pressure)
5. Russia
6. Greece
7. Romania
8. Jugoslavia (includes Bulgaria)
9. Ireland
10. Wildcard (i.e. Netherlands, Venice, ...)
I am really afraid to ask how #1 and #4 form. And by afraid to ask, what I really mean is that I don't want to have to spend the energy pointing out the problems with those states.
Kind of unpleasantly surprised how the Ottomans are driven out of Europe when a surviving Ottoman Empire in the SE is probably the easiest way to keep Balkanization (I'm so punny it hurts) down.
Seriously, can we at least try to look at what states could actually have grown larger and/or stayed more united, rather than trying to stick globs of territory together?
Its not even wank, its just...how on earth do you get a "Latin Union", for instance? That's France
and Castile-Leon
and Aragon
and Portugal
and however much of Italy you have in mind.
How are you going to make that one state?
When Sweden decides that Denmark's kings aren't welcome before the Kalmar Union even gets to the point of being one state - as opposed to a personal union of three - the problems should not be taken lightly. Picking this as an example because if it was as easy to form these unions as some suggestions are implying, that one would not have been such a complete failure.