I'm still not liking the global happiness, nor being able to adjust my tax, science, etc. spending. The finite resources is a nice touch though. Really wish that instead of doing away with the stacks you could form stacks of limited size, so you end up with a force that's linked. Also, wonder why there's no foreign trade, would be a nice addition to the diplomatic system - it could stand with some.
All in all, it does remind me of Civ 3, new concepts but still in need of tweaking.