Since we doing a big balance pass, thought it was worth doing a deep dive into wonders, to see where things stand. I'm going to cover the first two eras, and then I'll edit the post to add in the rest probably tomorrow.
ANCIENT
Stonehenge - Solid for someone wanting to take off on the religion race. I general I think pyramids are a bit stronger on average (more cities = more good), but both have a place depending on playstyle.
Pyramids - Also great, but not OP. The Pyramid rush is one of my standard build orders, but I have to have the right land for it and it has some key weaknesses (normally I am much further behind on my pantheon and have to book it to found.
Petra - Only a really good wonder in the hands of Trade focused civs (ottomans, morocco, etc) but the desert bias gives me some encouragement that I can get even with a less production focused city. Again, solid.
Temple of Artemis - Probably one of my least built wonders. I just always have other things to do and the bonuses don't scale as long term as certain other wonders.
Mausoleum of Halicarnassus - I like this wonder if I have the right quarry opening, I consider the "Maus Rush" a solid opener for Tall play. The free WLTKD is nice but often conflicts with my need to build settlers, but that WTLKD bonus is very good in a TALL capital.
Statue of Zeus - Pretty niche wonder for me. Its got use for spear focused civs, as you can get your barracks without having to go up a different tech path. On the other hand, often when I'm doing early rushes, I really need more units on the field...so the hammers I have to pay hurts. AI doesn't seem to prioritize this one much so that is a benefit.
CLASSICAL
Great Lighthouse - The wonder so lame it doesn't even get its own icon in the tech screen! Don't get me wrong I like the GL...there are just always better things to get imo. Even when I play water heavy civs and maps I just can't find myself willing to commit for it.
Great Library - My favorite use of this wonder is as a science springboard to Oracle. I think its good for Tall players (who tend to be culture over science, this helps balance the books). Its alright for Progress, I take it if I can manage it.
Roman Forum - I think this one can be seriously underappreciated due to being on the same tech as Hanging Gardens. The more I've used it, the more I'm impressed by it. The trick is...there is a tremendous difference between 1 and 2 paper. 1 paper means you do emissaries as a hobby, 2 paper turns it into a profession. If I have good CS spread, I get a huge amount of CS bonuses, which I think is why the wonder can be easy to forget as its not "right on the wonder". Also the fact that this is a wonder for science focused civs who don't yet have the culture for a Glib or HG.
Hanging Gardens - Every Tall player loves the HG. Its funny because I would say the long term of HG isn't all that great (Maus for example has way better long term benefits)...but that boost is so good when you get it.
Terracotta Army - I've taken it here and there, but don't have enough play with it in its latest config to know how I feel about it yet.
Parthenon - The problem here is that it competes with the Oracle, and the Oracle is awesome. For example, even with all the culture and science bonuses from this wonder....how long does it take to make up for 400 culture and science? A loooooooong time. Also tourism isn't strong enough at this point in the game for the tourism to really make an appeal. I only get this if I'm on a roll and think I can pick up Oracle and this.
Oracle - Just great, big boost, temple is actually a big portion of your money back, as its a decently expensive building. Its got all the good things.
Angkor Wat - I like AW, I just think there are better classical wonders. However, I find the AI is not always super competitive with it, so sometimes I can go north for a bit, come back to the middle and still pick this up. The mandir is easy to underestimate with Tall play...but again, I have other things to do.
Great Wall - Best defensive wonder in the game bar none, I just find that with my tech paths I can never get to it.
ANCIENT
Spoiler :
Stonehenge - Solid for someone wanting to take off on the religion race. I general I think pyramids are a bit stronger on average (more cities = more good), but both have a place depending on playstyle.
Pyramids - Also great, but not OP. The Pyramid rush is one of my standard build orders, but I have to have the right land for it and it has some key weaknesses (normally I am much further behind on my pantheon and have to book it to found.
Petra - Only a really good wonder in the hands of Trade focused civs (ottomans, morocco, etc) but the desert bias gives me some encouragement that I can get even with a less production focused city. Again, solid.
Temple of Artemis - Probably one of my least built wonders. I just always have other things to do and the bonuses don't scale as long term as certain other wonders.
Mausoleum of Halicarnassus - I like this wonder if I have the right quarry opening, I consider the "Maus Rush" a solid opener for Tall play. The free WLTKD is nice but often conflicts with my need to build settlers, but that WTLKD bonus is very good in a TALL capital.
Statue of Zeus - Pretty niche wonder for me. Its got use for spear focused civs, as you can get your barracks without having to go up a different tech path. On the other hand, often when I'm doing early rushes, I really need more units on the field...so the hammers I have to pay hurts. AI doesn't seem to prioritize this one much so that is a benefit.
CLASSICAL
Spoiler :
Great Lighthouse - The wonder so lame it doesn't even get its own icon in the tech screen! Don't get me wrong I like the GL...there are just always better things to get imo. Even when I play water heavy civs and maps I just can't find myself willing to commit for it.
Great Library - My favorite use of this wonder is as a science springboard to Oracle. I think its good for Tall players (who tend to be culture over science, this helps balance the books). Its alright for Progress, I take it if I can manage it.
Roman Forum - I think this one can be seriously underappreciated due to being on the same tech as Hanging Gardens. The more I've used it, the more I'm impressed by it. The trick is...there is a tremendous difference between 1 and 2 paper. 1 paper means you do emissaries as a hobby, 2 paper turns it into a profession. If I have good CS spread, I get a huge amount of CS bonuses, which I think is why the wonder can be easy to forget as its not "right on the wonder". Also the fact that this is a wonder for science focused civs who don't yet have the culture for a Glib or HG.
Hanging Gardens - Every Tall player loves the HG. Its funny because I would say the long term of HG isn't all that great (Maus for example has way better long term benefits)...but that boost is so good when you get it.
Terracotta Army - I've taken it here and there, but don't have enough play with it in its latest config to know how I feel about it yet.
Parthenon - The problem here is that it competes with the Oracle, and the Oracle is awesome. For example, even with all the culture and science bonuses from this wonder....how long does it take to make up for 400 culture and science? A loooooooong time. Also tourism isn't strong enough at this point in the game for the tourism to really make an appeal. I only get this if I'm on a roll and think I can pick up Oracle and this.
Oracle - Just great, big boost, temple is actually a big portion of your money back, as its a decently expensive building. Its got all the good things.
Angkor Wat - I like AW, I just think there are better classical wonders. However, I find the AI is not always super competitive with it, so sometimes I can go north for a bit, come back to the middle and still pick this up. The mandir is easy to underestimate with Tall play...but again, I have other things to do.
Great Wall - Best defensive wonder in the game bar none, I just find that with my tech paths I can never get to it.