I once played and invaded Eastern Europe, got an event saying NATO was intervening, the issue was that i conquered them so fast that NATO couldn't do anything at all. I Also do wish Nukes had a bit more weight to them, both in regards to Diplomatic ramifications, acquiring them and of course when you actually use them, but thats also sadly due to the limited nature of Nukes with HOI4 at the moment.
The Great Asian war is weird for me, i haven't seen China win it a single time, they flood all their units into Korea and manage to get overrun pretty quickly, Longest i've seen it go on for was probably 3 or 4 months.
America's stuff i found to be a bit boring, but granted, the Devs themselves stated that America is a bit barebones and they'll be getting a lot more content in the next major update, i did think the Afghanistan stuff and the whole proxy war mechanic was interesting though, supporting Apartheid South Africa results in you having to manage a suspicion meter whilst trying to give enough aid for South Africa to actually be able to fight the ANC.
Also Best Steam comment so far:
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