Is any of these campaigns actually winnable? Asking for Russia.
I've actually been working on a Russia post today.
My thoughts on several attempts at Russia's first goal:
-too many cities, too much unimproved land, too little economy, too little time
-3 cathedrals = 12 cities and 12 churches by 1550
-12 cities = your research is maybe at 30%, meaning you will never get Strelets or Urban Planning for St. Basil's (the other Orthodox wonder you might have a snowball's chance in hell of getting) in a meaningful amount of time
-Barb keshiks cannot be beaten unless they suicide against you crossbows behind city walls, because Russia no longer has a horse at spawn (my anti-keshik strategy in 1.17 was a lot of lancers with the anti light cavalry promotion)
Even with liberal whipping, I kept ending up in a situation like 3000 BC China: defending too much land with a collapsing economy against enemies you have no counter to because you don't have the techs needed to make them. And because you have no economy you can't get your three wonders, assuming Byzantines didn't steal St. Sophia's before you even spawn. Good luck getting Urban Planning before 1550, I haven't managed it yet.
Either I'm not seeing something or this is impossible.
Here are a variety of suggestions:
-give Russia a horse that's not in Kazan or Crimea (you CAN get the Kazan horses but after that you're on the clock to build lancers and horse archers before another keshik stack spawns)
-give them more workers on spawn so they can get an economy up faster
-reduce UHV to 2 cathedrals and 2 Orthodox wonders, OR give them more time
-more late medieval/Renaissance Orthodox wonders besides St. Sophia's, The Kremlin, and St. Basil's?
I have not tried Temujin's strategy of starting as Rus, I'm going to try this out and see how well I do.
And a side note:
I really think Russia deserves a modern-era unique unit. Since they're supposed to be the late game communist counter-balance to the USA, which gets three UUs (god bless~), here's some ideas:
-MiG (jet fighter with less range that costs less

- by the 1970s the MiG-21 short range interceptor cost half a million dollars per unit, the American F-16 was 2.5 million per unit as it came into service)
-Sukhoi (jet fighter with MORE range - the Su-27 series was built in part to cover the large gaps in the USSR's radar network)
-T-72 (modern armor with that costs less

and without a first strike [inferior fire control tech] - this was the "mobilization" model of next generation tank, built to be cheap and conscript-proof, it's still the majority of the Russian tank fleet today)
-BMP (mechanized infantry with the amphibious promotion - the Soviets took the infantry fighting vehicle mainstream, and the BMP series is designed to perform water crossings with very little preparation)
This is probably the wrong thread but I wanted to get it off my chest.