Getting interesting to read up so many here ...
I playing Romans and selected Pyramid as my first wonder to have more farms and resources before to build later. Now I am pondering what is my next Wonder after my Collosseum, since I think I wanna build my game more defensively before goes aggressive to attack.
Am considering Versailles ( to slow down invading armies & to HP Bonus to own troops ) or else, I may go for Angkor Wat ( to heal the defenders when defending & increase the trade goods capacity )