I really don't know whether I'd have time to complete this, but I've been thinking a fair bit about it so wanted to share the idea! (Partially inspired by looking at a 1985 mod for World at War, though this would be a bit different).
The concept is to have a mid-1980s World War III in Europe scenario, inspired by Tom Clancy's Red Storm Rising. That is to say - a conventional-only war, that assumes that the West's superiority in technology and communications means there is a fighting chance of defeating the Warsaw Pact's superior numbers.
This would be a bit of a different game to regular Strategic Command. WW3 would have been a short war, with a high operational tempo. For most of the time people expected the conventional phase of WW3 would last perhaps three days, and the Russians expected to be able to conquer West Germany within seven. Even the 'long' version of the war in Red Storm rising was over in less than 2 months. It's not a war that would conceivably have dragged on for 5 years.
Further, the geography of WW3 is different. In WW2 you had a front that ran from Berlin to Moscow (1,800km), in WW3 it was mainly Berlin to Bonn (600km).
In spite of the shorter timescales and distances it's still vital that WW3 should feel like a war of movement - engagements should be faster and sharper and reconaissance even more important.
So what I have in mind is a scenario with perhaps 3-day turns on a larger-scale map, and units at division level rather than corps/army level. (In any case unit density had decreased between 1945 and 1985).
My first thought was "oh god really changing the map?" then convinced myself it would be really difficult to accomplish the right effect on the existing map. The existing map works fine for 1946 when there are overwhelming Soviet forces but the dynamics of combat are pretty similar to 1945. But not for 1985.
Then I started to think about what kind of map would work. Obviously it needs to be centred on Germany, but it should also encompass Murmansk (so NATO submarines can raid into the Barents Sea), Greenland (for the G-I-UK gap), plentiful space in the Atlantic, and preferably a large part of the Mediterranean (as this was a realistic naval theatre, at least at the start of the war!. I experimented with including Turkey, but in the end decided not to because including the potential Caucasus front would take the whole map too far East.
Of course there is no idea map projection - there is an inherent compromise between having distances and areas looking accurate, and shapes and directions looking accurate. For this scenario, with many long-range weapons systems, I felt prioritising distances and areas was more appropriate. It really does matter which parts of the map are within the range of a Backfire bomber based on the Karelia Peninsula, for instance ;)
After a bit of fiddling on this website: https://observablehq.com/@toja/five-map-projections-for-europe
I came up with the following map - a Lambert Equal Area projection that meets all these criteria. Of course, it will be a huge amount of work to fill in this map in the editor, but it is possible... :)