I've got a number of gripes and missed opportunities with Wonders that they could correct to make Civ VII a happier experience:
The Great Dam of Marib - what the Great Bath should have been: a 1900 foot long earth and stone dam for irrigation and general water control, built in the Ancient era (around 1700 BCE): This will control your rivers, not a foot bath probably used for purification before entering a temple.
Colossus (Ho Kolossos) - for once, just once, could they please get this right: it had Nothing to do with trade, or harbors, or ships, or even floating: it was a Thank You Gift to the God Helios, for helping deliver the city of Rhodos from a seige. Its effects should related to Defending the City or Construction - Engineering (it was a very advanced structure, using an iron frame around an artificial stone pillar, covered with brass/bronze skin which included some of the largest lost wax castings made to that date)
Chankillo Astronomical Complex - a Native American Wonder that is not Mesoamerican or Macchu Piccu!! A solar calendar/temple/observatory on the coast of Peru that could precisely show equinoxes and solstices and solar dates throughout the year: a Classical (built around 250 - 200 BCE) Stonehenge.
Pantheon (Pantheum) - the Temple of All the Gods, built in Rome around 126 CE, the world's largest free-standing unreinforced concrete dome for 2000 years: could be a Construction/Engineering OR Religious Wonder - or both, because it not only served all the Roman Gods, but was converted into a Christian church 500 years later.
Temple of Kukulcan - what the game keeps mistakenly calling "Chichen Itza" - which is the city it's in, NOT the temple/throne room. This is like calling Notre Dame de Paris just "Paris" and thinking you can get away with it.
House of Wisdom (Bayt-al-Hikmah) - the Abbasid equivalent of the Great Library: the center of the translation movement rendering into Arabic from everywhere: India, Persia, Europe, Byzantium, etc.
Grand Bazaar (Buyuk Carsi, or Bezzazistan-i-Cedid) - one of the largest and oldest covered markets in the world: 4000 shops (take that, Mall of America!) so many superlatives it's a crime it hasn't been the great Commercial/Trade/Gold Wonder of the mid-game.
Smithsonian Institution. - the Universal Museum if ever there was one: 154,000,000 exhibit items, 19 different museums, 21 libraries, 9 research centers on subjects from natural history to art, ethnology and aerospace.
Pasteur Institute (Institut Pasteur) - one of the foremost biomedical research centers in the world against infectious diseases. IF the game ever adds plague as a natural disaster, this Wonder has to be in the game.