But currently Moscow is one of the worst capital city locations (meaning, tiles a civ spawns on) in the game. It's certainly the worst in Europe. Should that remain the case? Especially given that Russian UHV specifically requires you to settle there? While any city slightly to the south, west, or east (now with the new changes) of it is much better?
Berlin is buffed (several times) because the Prussian UHV requires you to settle there. The same logic applies to Moscow. There is even no need to add resources. Just move the southern Wheat and Iron around a bit so they are in Moscow's BFC.