Would eastern and western Ukraine be better off going their separate ways?

[palandio]

[provocation]
Red = Germany after the Treaty of Munich 1938
Blue = Protectorate of Bohemia and Moravia
Brown = Slovak clero-fascist puppet state
Purple = Generalgouvernement
Yellow = ceded to Soviets due to Molotov-Ribbentrop Agreement, later annexed into Generalgouvernement
Orange = Romania
Green = Greater Hungary during WWII
Lime Green = Italy
Beige = Ustasha state
Grey = well, that doesn't fit, it's little Slovenia, which in reality was split up between Red and Lime Green...
[/provocation]

Altogether I think that preserving a democratized "Greater Danubia" in which no nation dominates wouldn't have been the worst solution.

Speaking only of Germans and German-speakers I think that (after WWI) a unified Germany+Austria would also have been a good solution. Putting the whole of Bohemia and Moravia into one land was a good idea from a geographical and economic point of view. Add to this some Slovaks, Hungarians, Rusyns and Poles to balance Czech overweight and you get exactly Czechoslovakia. They would only have needed a slightly more conciliatory approach from both Czechs and Germans, and they were on a good way actually, until...

On topic: I don't think that splitting up Ukraine would be a good idea. Many oblasts have large minorities of people that have a different "national identity" from the majority. You can't separate them, only try to find a middle ground between different orientations. Crimea is maybe another topic, but it has autonomy and Sevastopol is leased to Russia, so the status quo might be the least worst option.