Only two big things I can think of at the moment concerning wonders.
1. No wonders like Leonardo's Workshop or JS Bach's Cathedral. I know they were a big part of the old series, but after the introduction of Great People in Civ4, I think it's proper that they aren't necessary. Some may disagree on this with me, of course...
Well, Leonardo's Workshop was replaced by a general mechanic (unit upgrades) - it was a bit overdone allowing this ability only for the one civ that had the thing.
2. A wider variety of wonders in terms of global/cultural representation. I mean it's okay if the majority of wonders are Western or European or Graeco-Roman, but there should be at least a good amount of wonders from other places too, just to make the game more interesting.
Borodbodur and Great Zimbabwe are two obvious ones I can think of adding. Also more, and more diverse, natural wonders.
I do like the idea of some wonders giving a bonus to their original civ. But on the other hand, there are more wonders for Greece then for Mali.
Timbuktu would make a good Wonder, but is already taken for one of the Songhai city names.
I think the great library should be changed. In ancient times the city of Alexandria confiscated all books brought by travellers and copied them. The great library should give research bonuses for every trade route going into the city.
In not-quite-so-ancient versions of Civ, the Great Library worked by providing the builder with techs discovered by any two other randomly-selected civilizations in the game, which is a much better reflection of its effects than either the Civ IV or Civ V incarnations (yes, it attracted scholars from elsewhere, but not scientists - it might accelerate arts production, but producing extra science specialists really makes no sense).
I find alot of this conversation and some of the game set up a bit crazy and and openly contradictorily mew.
When I play through a game of CivIV at cities with water access I like to build a lighthouse and try to get the Great Lighthouse built afterward. But seriously can some one tell me why my city needs 2 lighthouses? Shouldn't the great light house maybe I don't know replace the lighthouse mew? And why does a city my city have 2 libraries as a library and a Great Library mew? If its Great then who is going to waste their time on a flunked out library? Or what about the aqueduct and the Hanging Gardens? Their the same freaking thing. Why all the freaking redundancy?
This list can go on and on. The Church of the Nativity? Glorified Christian Cathedral. The Parthenon? Was a glorified ancient bank. The Three Gorges Dam? Just an oversized hydro power plant.
In the real world, most cities actually have more than one library or church - although lighthouses are more arguable. And I'm not aware that the Hanging Gardens were used as a domestic water transport system - aqueducts are still needed, and come to that multiple aqueducts are often needed to transport water from the nearest water source.
I love the sewage system as a great potential wonder. On the surface it seems so funny. "The English civilization has just built a world wonder, the great Sewage System." lol
Given its significance in terms of the development of similar underground transit systems elsewhere, the London Underground (or possibly Baker Street, the world's first underground station) would have a good case.
