First and foremost, great start, I've just got some thoughts though:
1. I assume you're using that orange to indicate stuff to look up the details on at a later point?
2. That's certainly an original way of showing the single-pixel islands, but I'm not sure it's particularly aesthetic (the Argentine claims to the Falklands look particularly off) and really falls apart in the Pacific considering that you can't see the borders between Palau, Micronesia and the Marshall Islands, and as we don't actually have a colour for PNG you'd have a big issue for the Solomons (plus Fiji, Samoa, Tuvalu, Tonga, Kiribati etc- we're definitely not having a colour to distinguish Kiribati from Tuvalu).
3. The way you've shown the ASSRs is very inaccurate- they were basically just Oblasts with a fancy name. Ditto with the modern Republic/Oblast distinction. LSCatilina has used a 'de facto autonomous area, de jure integral' outline method before (as well as for China which also has 'autonomous' areas).
4. I'm not entirely sure about the Warsaw Pact being that way either, but I think it's more that we need to go through and look at how individual countries should be shown more than anything.
5. What's going on in China in the 45-48 period?
6. If you're using my 1885 basemap for Africa, I've done an updated version (also including a British territory colour for Representative government as opposed to direct rule).
7. For the love of god though, don't include the Indian reservations- not only are they basically irrelevant, most of those are wildly anachronistic for the 19th Century maps.