Welp, had my first crash on turn 214 of a Deity game.
Thoughts so far:
The policy changes in Liberty and Tradition are great. I now value half those trees as much as later ones (so I no longer feel like I need to make sure to rexx my next policy away until Ren.).
The game feels easier. I think this has to do with the increased city spacing, but the AI is just not much of a challenge.
Early wonders seem like they are more expensive, but on Deity that means absolutely nothing to me, since I avoid them anyway.
Shock of shocks I found myself building Monasteries in a science game, thanks to the no maintenance. Playing as Siam, its now possible to pretty much ignore culture buildings and still get a good amount of policies, though. This is due to Wat+Public School+Liberty/Tradition.
The early free GP is actually really interesting. I noticed about 40% of the AIs got an Artist and dropped a Landmark. I also saw 1 Academy.
My overall impression is that the changes were fun, but the decrease in AI intellect actually decreased the replayability of the game.