There was a thread on Reddit the other day asking about people's 1972 headcanons so I'm just going to copy/paste my response to that here since I finally bothered to write it down:
Russia: The West Russian United Front (ultimately led by Bukharina) defeats all its opponents, and storms over the Urals to crush a faltering Black League. In the Far East, Sablin fights against the odds to realize a free Soviet world, but seems doomed to be ground under Novosibirsk's superior industry and manpower until the Russian Soviet Republic rolls in to save the day. Sablin is currently semiretired but seems likely to take Suslov's "sinecure" soon, as he's far more likely to give sincere advice to the Party. Bukharina's state now builds up its forces, ready and waiting to strike the fascists that surround it.
USA: Basically what you have really in terms of Harrington, but the OFN is a little less unified and the rapidly intensifying foreign policy sector are going to catch Harrington off guard near the end of his second term, but his social programs are going to be the third rail of American politics forever.
Non-Germany Europe: the Commonwealth of Britain serves as a bridge between the OFN and Socintern, which is currently a lot easier with the NPP-C in charge but the future may test its loyalties more. Italy has semidemocratized but the shadow of Fascism looms large over it. That it is in the OFN causes no amount of discomfort, but it is strategically important and brought over the Balkans as well. Iberia is just wholesome blessed democratized Iberia, in the OFN as well.
Japan and China: Japan has been liberalizing under Takagi, but the failure of Order 44 has thrown things into chaos, and a truly modernized China is ready to strike back against its master. But how much fascism has infected the hearts and minds of its leaders? What will China unchained look like after its century and a half of humiliation?
Germany: Speer won, but ultimately fell victim to the NatSoc coup in ~70 or so. The backsliding and degenerating conditions, both living and militarily, are beginning to be a concern even to the coup leaders, who are beginning to wonder if the Go4 were right. And all the while, people who had a taste of liberalization are angrier than ever about what they lost.
Middle East: The Levantine Confederation maintains an uneasy internal peace as the UAR breathes down its neck. The UAR not exactly being sure how it wants to align itself (factions pull it towards fascism, socialism, a more local authoritarian flavoring, the works) helps somewhat. The socialists win out in Iran (thanks to a lot of Soviet aid coming in over the Caspian sea (and eventually just over the border), providing a needed non-colonial member of the Socintern to Bukharina.
Africa: Pro-OFN ceasefire results in a nearly immediate Afrikaschild collapse. States like the Popular Republic of the Congo and the Socialist Republic of Tanzania are critical members of the Socintern, while South Africa somewhat reluctantly acts as the OFN's main influencer in the region. Also the Cameroon African State has land on Lake Congo because it seems like a neat nation and should be playing more of an influence in Africa.
May eventually make a worlda of my 1988 (25 years since the death of Hitler) canon one day, but who knows.