The Mongols counter the Russian UP pretty well, I'd say, maybe they could get 1 more unit in their conqueror-stacks.
Also Russia does need that UP early for those annoying hordes of Barbarian Horse Archers and in case Byzantium/Turkey declare war on them early on.
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The Dutch need some nerfs:
After I took Amsterdam in 1640 (basically as soon as possible) I made peace with the Dutch who then had 2 cities somewhere in the world.
In 1750 I decide I have had enough of them and the risk of those annoying congresses costing me my UHV is too high, so the Dutch have to go, I gift them a tech only to see their stability go from shaky too stable despite them expanding to now 6 cities allover the world - without a single one in their core
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During my game with France I noticed of how little use UB & UU are. The UB would be a lot better with an artist slot instead of the 25% culture (and it comes almost too late for UHV 1 anyway, I managed to get its tech via Liberalism in 1600AD), the UU might be useful for those fights between 1700 & 1800 AD, if you still need to fight.
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Don't forget you wanted to give the Indonesians a better UP (better trade-route-modifiers).
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From 600 AD until almost 1600 AD I was Catholic as France and yet I barely noticed any votes from the Apostolic Palace in that time. And when there were some I had no idea what those do, sure usually I had a vague idea of what they
might do, but some additional information in-game on those choices would be really nice.
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Please change the first Aztec UHV to "make the city reach size 15-17 by 1520". I had Paris at size 17 in 1450 in my French game, despite cottaging every tile and it only working 2 of the 3 food resources in its BFC
and severe whipping until 1000AD.