I originally thought of it as a dream book I would read non-stop for all eternity and that would be buried with me, but I guess I imagine it as a game, so let's give it a try.
A singleplayer set in a fictional WWII universe where the war does not end in '45, but goes well into the 50s. Hitler gets assassinated in 1943 and Goering rules in his place. The USSR is not as much "communist" as in the real world, so it has closer ties to the US, which doesn't develops the atomic bomb as soon as in RL, but eventually does in a joing research program with Soviet scientists. Japan attacks the USSR during the war so the Soviets have limited military capability in Europe, having to defend it's ass in the East, so the Nazi advance is not completely cut in Stalingrad, but later, in Moscow, but it is also not as fast as in RL. There is a whole lot of stuff I imagined about the universe, but I can't remember every single piece of it(if anyone tells me that it is not realistic, I'm going to rape you with a spoon. It is an alternate universe, it ain't supposed to be realistic).
Anyway, getting to the actual game story: It would be set in 45~47, following a three-man squad of Soviet soldiers that was cut off from the main Soviet army, and is trying to regroup. In the way they find a German desertor, that becomes part of the group. The game would be much more focused on stealth and coordinating the squad(possibily in a Co-Op environment) than on actually fighting the nazis. You would have to hide and conserve ammunition, try and disguise using enemy equipment(good luck stealing anything with no blood stains), anything to re-unite with the main Army. It would be pretty much open-world-ish, with certain set-points that need to be reached to advance, where the characters rest for a couple of days hidden, telling old stories(that you would protagonize, like the two WWII Reznov missions from BO) with their life experience and deep philosophical thinking, mainly about war ethics, when does killing the enemy to protect your country becomes just mindless murder, what is a "fair" weapon, things like that. Well, in the original book idea in the end, after they reunite with the main forces it would be revealed that it was the German desertor that was narrating everything the entire time, in '63, and telling that two of the Soviet soldiers died in a nuke detonation near the end of the war, while the other died of radiation sickness, and the German is dying of it too, so he decides to put his memories and experiences in the book, telling how horrible was the war, but I don't know how to put that in the game.
I imagine the graphics as something "Battlefield 5"-ish, to get maximum realism. I can't think of the actual technicalities because 1: I have no knowledge on the subject and 2: It was originally a book I kept daydreaming about so I didn't have the time to actually sort how it would work as a game.
well not that I look at the text I think I might have went a little overboard
why are you even reading this