What do you think of the balance?

Are there any abilities/wonders/units that you think are overpowered or underpowered?

In my unprofessional opinion, rubbish. It seems all the new civs were balanced against eachother, with no regard to the old civs. Hence, all the new ones are OP. I did not have this opinion of gods and kings when it came out, nor do I have it now.