I dont believe this has been reported but this is an issue I have. I played with enlightnement era, both the OG version and Cayms version for a few years and something always felt off with the policies.
The mods adds a whole new set of tech but it did not adjust the impact on the policy timing so the mid game feels very off.
Wether you play with this mod or not, the amount of policy needed to choose an ideology is the same. Since rationalism, industry and empire(whatever that branch is called) are delayed because of the Enlightenment, once you unlocked them, you barely have the time to select some of them that you already have to pick an ideology. This is while playing Marathon speed several times with different maps and nations. Because of this I am force to choose an ideology much MUCH too early compared the techs I have. I would suggest increasing the necessary policy amount needed.