Just tried your mod (whatever version was online yesterday), and overall, great job!
Played Russia/prince, I generally play vanilla on Immortal, but wanted to see the balance.
Here are my first impressions:
Low building cost - win. No/low maintenance cost = double win.
Monument=overpowered. I guess that's the idea...
Overall combat was pretty similar (I guess you are no longer doing the healing nerf), but no healing promotion was nice, lower open grounds was nice, higher river crossing penalty was double nice - attacking a city with horseman from behind a river was way too powerful imo. I did prefer higher defense value of rough terrain in vanilla.
Taking cities overall feels harder - do they have more HP?
Social policies... Overall win. They feel stronger, more game changing and easier to get (esp with monument spam).
On my first try I felt Honor was overpowered in early game. After adopting honor I had +108% against barbs, so even my scout was clearing camps easily. Also the ability to get double XP before great general and power-up those warriors is very strong. With monument being my first build, those policies came very fast.
Any race with an early sword/warrior unit would be very strong (Iroquois, Romans, Aztecs), as those warriors can get their experience up very quickly.
Russia obviously gets a huge boost, since it can still launch 4 horseman of the apocalypse...
Anyways, in vanilla +1 happy per connected city is very strong, so I take it more often then honor... But in your version liberty doesn't have any +happy modifiers (the only tree to not have one), and anyways with -4 happy per city, +1 wouldn't be as strong.
I understand how liberty would be useful in the long run with all that +gold once you can City Spam (I assume after theaters can go up, filler cities can finally be happy/neutral or happy positive if my math is correct).
Tradition got a nice buff, but since I always prefer large sprawling empires to small ones, it was never my cup of tea.
Piety - interesting... Most changes make sense though.
Medieval policies - very nice. I like what you did with Patronage being the only cost efficient way to ally with CS. Cultural CS seems too powerful though.
Commerce - needed the buff, although with triple silver near my capitol +50% is super strong. Reduced road maintenance - big win, and makes sense too - there was a feel that something big happened once I got to middle ages.
I like the fact that one has to choose now between Commerce and Patronage - as both are very strong and very juicy. Autocracy being medieval - also nice and goes well with honor which is nice for an underused policy tree.
Haven't gotten further yet, but I assume Freedom is more powerful by virtue of larger cities/more specialists.
Planned economy is now a must...
Happiness mechanics is more interesting than vanilla, I especially like smaller courthouses. There is however a bug, at least I believe it to be a bug:
I have 7 settled cities and 6 annexed ones. Yet my unhappiness from cities is 28, and not 52 once I built all the courthouses. Unhappiness from population is working as advertised.
Needless to say I was confused for a while seeing my happiness fluctuate widely as courthouses were going up, and my empire is probably bigger then you would have intended by this point in the game.
Overall good job though - game-play feels very different but overall better, I build different buildings, and teching up gradually increases the efficiency of my empire giving the game an exponential, rather then linear growth. Teching speed is way slower - but ICS I was using before was probably overpowered anyway.
p.s. What's the point of the caravan? Rushing courthouses? Or wonders/spaceship as well (it says buildings)? I imagined waiting till industrial with few cultural cities grabbing planned economy, and then exploding in a settle - caravan rush monuments, Coliseums and theaters in the new cities.
But then the bug I described is probably making my gameplan quite different - free happy from annexed cities is very powerful
p.s.s. Do the modded games not autosave? I miss-clicked and burned my GG on a golden age lol. Had to roll with it, since my only autosave was 4000BC
