Okay, I haven't yet completed my first game, but I'm seeing a trend that bothers me.
First off, I can confirm that Communism is missing, along with it's buildings and the State Property civic. It's spot on the chart was apparently taken by Logistics and I guess you forgot to move Communism elsewhere.
I am playing Marathon speed, which I know is different from your recommended game settings. It's what I'm comfortable with, though. That being said, the number of turns in the stone age seems off; it was considerably later than 4000 BC (actually closer to 1 AD) that I even got to the basic starting technologies such as Farming, Mining, the Wheel.
I'm playing on Prince level. It's currently 1815 AD, and some nations took a very, very long time to get out of the stone age. One, the Mayans, were recently (about 1750 AD or so) researching
Mining. Then they got conquered by one of their neighbors (go figure.)
Another problem I saw - admittedly with only one game to go on for sample size - was that while the going was slow, I managed to reach the Ancient Era
much faster than anyone else. As a result, I was able to get Buddhism, Polytheism AND Monotheism before anyone else. I know you suggest using "limited religions" which I did NOT use. Maybe this is why it should be used.
In this game, I have about 470 turns to go and I'm researching Railroad. I have my doubts that I'm going to see much of the "future wars" era, and I think that it's because the stone age took so long.
Has anyone else paid attention to when they reach the Ancient Era, in comparison to the normal 4000 BC start?