Love it so far. The pace is perfect for me. I've long grown out of the hardcore gamer stage and don't want to dedicate 40 hrs to finishing a game. In normal game speed, noble difficulty I am able to finish the game from ancient to modern in a day.
Even after running it with multiple map restarts, one game from start to finish, more multiple restarts, multiple save and loads, tabbed out to post messages, and etc, the game shows no slow down or any signs of memory leaks.
I think the introduction of religion will eventually prove to be a brilliant move. In one game, I was able to beat the AI to found all religions. It basically eliminated all religious negative scores in diplomacy.