If I had total, absolute creative control to do whatever I wanted: I would drastically bring the scale of the game down, frankly. The engine is, at best, a "Barbarossa" simulator and not very good at depicting any other combat front in the War. I would focus the base game on the events from June 22nd, 1941 until late January, 1942. You are not the Führer or Stalin, you're the General Staff in charge of the Front. The resource production/material production is actually just routing armaments to your front and that sort of thing. Basically a more abstract version of what exists now. The "scale" is brought down to either the Regimental or Brigade level operations, and your job is either to repel the German forces and take the fight to them, or to push to the Archangelsk-Astrachan Line, with smaller operational objectives populating either in a dynamic sense or guided through gameplay or something. I would compensate with such a radical redesign by promising Paradox executives an endless stream of similarly-based "small-scale" front DLCs, such as Poland 1939, the Westfeldzug with the Invasion of the Low Countries and the Battle for France, the Centrifugal Offensive, etc. I would also offer, at a cost higher than DLC but slightly lower than the base game, extensive modding tools that do more than any of the previous modding tools available, to fully grift the loser modders so that way not only do they do it for free, but they've got to pay for the privilege too.