I had a couple of strange ideas for technology moves. I'm not sure if they are very good. I'm just posting them to see where they might go.
1. What if Tradition replaced Mysticism in the Ancient Era, instead of Caste System? We have Ritualism as the "early religion" tech. I'm thinking that Tradition could replace Mysticism and Mysticism itself would move to the Classical Era. With the right choice of prerequisites, it might be possible to break up the concentration of religions (specifically the Literature/Hinduism - Meditation/Buddhism - Philosophy/Taoism chain). Also, I really don't like how fast The Oracle gets built since it only requires Priesthood, the AI gets a lot of bonuses early on, and it is programmed to beeline the religious techs. Oracle would be a good fit for a Classical Era Mysticism tech. Furthermore, most of Mysticism's tricks aren't very good. The Prophets civic isn't very useful until a religion actually spreads to your civilization, and the reveals of Hemp and Tobacco have to wait until Calendar to get an improvement bonus.
2. What if Consumerism was Modern Era instead of Industrial? I want one more Modern Era tech to give Nanotechnology the boot from the Modern Era to the Transhuman. Tunnel could be moved elsewhere and Nano Research Department sent off to Metamaterials. Consumerism would fit somewhere in the early Modern Era, probably either just before or just after Mass Media. (I also noticed that both Realism Invictus and World of Legends have Consumerism as a Modern Era tech.) Consumerism carries Civilized Jewelers and Fashion House corporations, Shopping District, and Madison Avenue. Pulling these to the Modern Era would not hurt too much. The problems here would be finding another Industrial Era tech to bring that era up to 40 and filling the hole that would be left between Propaganda and Applied Economics. It would not be awful if Applied Economics moved back a column. AE leads only to Globalization and Logistics requires you to get one tech from the last Industrial column before proceeding to the Modern.