I enjoy playing Civ3 a lot, as well as Civ2, but I would also say that, in a way, they are completely different games, with changes that require different mindset while playing. I would say that the biggest problem with Civ3 is that it doesn't seem finished. Just looking at the city view screens you can see this, with the lack of buildings. They are also several other missing items compared to Civ2 such as the wonder movies and council, that made Civ2 special. The one that really annoys me is the way you no longer get the history of the research when you get a tech (although you don't in FreeCiv either). There are other things that are annonying - no terrian terraforming, and having to research certain techs to advance (in civ2 rules, you can get away with no religion).