Three posts while I was typing
Nice to see the discussion picking up, since we were (are?) dead last in post counts!
I think we have consensus on moving to the PH by now.
Great points beestar, I have some more points.
On warriors: I don't know when they will be ultimately obsoleted, but we should probably have a few more than four, just in case something goes wrong. Since we have them anyway, we could consider running HR early to make them economic investments. But they could just pay for themselves spawnbusting anyway, and lets see if we have stone first anyway..
On fur: I think it is likely that a barb city is preplaced and buffed up not unlike Atlantis in SGOTM9. However, with two games featuring barb galley invasions, I would be surprised if this was the case again (but still something to be aware of). I think it is likely that this particular barb city (holding furs) is located on an isolated island, likely non-coastal, and likely requiring galleons to reach.
On DOWs: I think we should be cautious about early DOWs, since we may not know for a while who we need to attack to acquire the needed resources, or for other reasons. It would be stupid to pinpoint our two enemies before we have more knowledge.
This of course means that we should put extra priority on exploration, and that early landgrab is more important by using blocking cities and so on, because taking our neighbours cities may not be an option.
On GPs:
Fascism and Fusion are obviously out of the picture. And depending on the AI, Economics will probably be lost before it is worth the detour.
Music is easy to pick up if we go for Literature before Education, which is usually nice for a PHI leader.
For culture, Physics and communism are too advanced, but for diplo, Physics is on the path and communism can probably be won even after we tech Mass Media.
Great Generals are easily the cheapest GP to come by, since their used effect is minimal compared to other GP, and they are already a byproduct of something productive (WAR), unlike most GPP generation. If we can generate a few of those, it could be worth a lot of turns by burning a couple of scientists more on Physics/Electricity. Specifically, a war may be smart to prolong a bit if it can make us another general.
On AIs alive at the end: We need to be careful that an AI-AI war does not end up with someone dead. When we see someone WHEOOHRN, we should carefully consider the situation.
On Free Religion: If there is an AI with a FR favourite civic, we should consider making them a war target to avoid them reaching liberalism.