I wish AI was smarter when the game gets at the final stages...CIV is still my preferred game ever!
Still a great game. I cannot get the hand of playing harder levels, I can just get anywhere without reloading (cheating basically) which is worthless in the end.
The graphics are great, so is music.
The new combat system is simple great, I was scared first, but it was a welcome change
AI diplomacy is not so great though. They are pretty agressive and usually don't hold to their word...but in the end it's all againts all so....
You need a powerfull CPU, that's a drawback if you live in a country where PC are not cheap (eg South America)
Another thing I'd do for future releases is adding more units per era, it'd be great to have more options, and also more individuality (as per different combat per CIV)