economiser
Chieftain
You missed the second half of my post: That all the fluffy 'social' techs from Civ 4 have been moved to the social policy tree, which is obviously a level of complexity/decision making far and above the civic system. You're not going to miss Meditation, priesthood, polytheism, monotheism, monarchy, constitution, democracy, feudalism, Aesthetics, 'Drama', and military tradition. None of those are actual technological advances anyway, just social developments/systems. The actual social developments in the game now are linked directly with culture, which makes a whole lot more 'sense', and makes culture actually useful for non-cultural victories.
I'll miss democracy and the constitution, but I guess I can make do with Fascism!

I'll also miss having my peaceful empire frantically researching fascism in order to get the free great general.