I loved the graphics in civ3 and I truly wish we could include culture into CTP2. So now the big question becomes: Would it be possible to add culture into CTP2 in a convincing and well thought out way? Personally, I hope the Firaxis expansion pack includes some sort of scripting langauge so we can start to merge the best features of CTP2 and Civ3 togeather.
For Civ3? Yep, but that's never gonna happen (requires mayor changes in the game engine so unless they already did a lot of prepatory work it's not gonna work).
For CtP2? Well, eventually I or someone else will look into it and perhaps try to convert at least some part of the Civ3 culture system to CtP2, but it will never be as nifty as in Civ3 since you really need to be able to edit the user interface for that, which quite simply you can't (unless of course we get people here willing and able to hack the exe)...
I guess I must sit back and wait for a "Gold Edition" or an equivalent to Test of Time. Maybe then some of CTP2's features will be incorporated into Civ3.