"Personally, I HATE that Civ rules that "more is better". I mean, of course countries like China, Russia and the US have always been the best in the world when it comes to production, research, culture, entertainment, religion, etc. Let's forget all these countries like Korea, Japan, or Germany, Denmark, The Netherlands that are at least half the size of the aforementioned countries, and are doing much better on some of the aspects above.
I wish you'd be rewarded for developing a succesful civ, not a large civ. Currently I'm playing a game where I, by sheer luck, have enough space to develop. Standard map, and I have about 20 cities where the opponents have about half. I'm doing twice as good, even though almost all my cities are relatively unhappy.