I would imagine the world, aesthetic wise, would have a more
Cassette Futurism look, used grungy future look optional, that we see in Alien and similar late 70's, 80's sci-fi movies. Big, bulk CRTs built into consoles, monochromatic computers operating off of text commands without any GUI interface, data storage is done either via floppy disks or for big files huge, honking cartridge like hard drives you slot in the computer like 60's Star Trek.
Geopolitics-wise, if I was world building I'd actually try to avoid the eternal USSR trope. Likely have Gorbachev overthrowned by hardliners but an analogue to the 89 Revolution still occurs so the Soviet Union is reduced to a partial rump state. Rather I think it would be more fun to have the Cold War be between the US and Japan as almost a mirror conflict where America is standing in opposition to the "rampant Capitalism" of the Japanese trying to use economic warfare to buy up the world.