Yep, my thoughts exactly.
I do think we'd see a war in which the Kalmar Union loses against the Poles and subsequently the Kalmar Union goes to focus in on American colonisation.
The Russians only started moving into Siberia en masse in the 1600s. It's very possibly butterflied if Russia gets eaten by Poland before then.
This tl is in the 1600s the Russians are already moving out with the Cossacks.
Korea blobbing into a massive empire would be interesting indeed.
Yep totally, throwing in Korean Manchuria and stuff would make Asia very interesting if Korea and Japan get much bigger than otl in terms of their heartlands. After all there's a reason why there's a ton of Koreans in Kazakhstan.
Alternatively China does reunite and with no Russian Siberia, an alternate Chinese dynasty seizes Siberia. Sounds OP af ngl.
I do think that an alternate Qing could try to colonise Siberia but I'd think they'd ultimately fail considering otl (they'd be left with a lot of natives there) so it'd be similar to otl unless you basically have a totally different China at that time.
I also do like fractured China which would allow Asia to be more balanced (there's lots of unintelligible Chinese languages considering 'Chinese' really is 'a dialect with an army') with Korea and Japan holding the strings. Another interesting thing that could happen is a different colonisation of SEA and have a bunch of different islands speak European languages and even Asian languages like the various Chinese dialects like Teochew and Cantonese, Japanese and maybe even Korean.
Also lol if Poland becomes a superpower ITTL, when the 20th century comes around, Poland can into space.
Polansk can into space and Muscovy is rightful Polish clay!
Considering if we have fractured China and maybe India (a Hindi speaking North India with a Dravidian speaking south India is very possible) the closest competitors would be the French Antarctique and British Africa if it extends to Zambia. Hmm ittl southern come would be the most developed outside Europe.