Alright, so I've gotten a chance to play through a game in its entirety. On the whole, I have to say, an excellent revision to the original rules. So much more variety in each of the civilizations, which is always a bonus.
However, I do have some gripes. Lowering cities to a population cap of 4 before aqueduct is quite stilting to your civilization. So much so that I found a real lag in civilization growth, especially because Architecture is gotten only mid-way through the second age. Additionally, why lower trade houses and marketplaces to the simple one happy face/luxury instead of how they were in the original? Finally, settlers costing 3 citizens instead of two? Why?
In truth, I can understand all of these changes, but I find they just slow down the entire game; I had a real lag period just before the second age where my size 4 cities were really frustrating. Additionally, the beginning of the game is really irritating for expansion when settlers cost so much, especially when you play the game on the higher settings, and the computer manages to cheat itself into multiple cities faster then you could ever dream.
A reversal of these would simply make the game faster, the civs more powerful in general, and in my opinion would equate to more enjoyment.