I really think this thread needs to be remade post the 2.08 patch.
Creative, for example, now gets cheap libraries. That is insanely useful, especially because libraries are good "culture-growing" buildings early in the game (I build them in my cities to expand borders before I get theatres).
Imperialistic isn't all that bad, overall. The extra GGs, not twice as many but more like 50% or so more because the points required for each GG increase, are nice to have on hand. Having two settled GG's in military production cities gives you an incredible advantage in training over your enemies, and having a Military Academy, settled GG, and Heroic Epic is awesome in the mid-game. However, you aren't going to have enough GG's to do this more than once unless you warmonger often or use the Imperialistic bonus.
Creative, for example, now gets cheap libraries. That is insanely useful, especially because libraries are good "culture-growing" buildings early in the game (I build them in my cities to expand borders before I get theatres).
Imperialistic isn't all that bad, overall. The extra GGs, not twice as many but more like 50% or so more because the points required for each GG increase, are nice to have on hand. Having two settled GG's in military production cities gives you an incredible advantage in training over your enemies, and having a Military Academy, settled GG, and Heroic Epic is awesome in the mid-game. However, you aren't going to have enough GG's to do this more than once unless you warmonger often or use the Imperialistic bonus.