I hope there will be more non-Western wonders. I have always been annoyed by all sorts of "architecturals wonders of the world" lists in all media to often be "world = western culture + greeks + taj mahal and chinese wall"

Especially early civ installments sucked in this regard: "wonders of the world... yeah, 90% of them are Western or Classical (Western ancestors basically)"
So far we get:
*Mandatory "classical wonders of the world", the entire concept is based on the original list of 7:
Colossus, Great Lighthouse, Great Library, Hanging Gardens (I'm wondering if remaining 3 are in civ6 again)
*Sphinx [Egyptian] - okay
*Eiffel Tower [France] - okay
*Big Ben [England] - okay
*Hagia Sophia [Byzantium] - okay
*Mont St. Michael [France] - okay
*Colosseum [Rome] - okay
*Venetian Arsenal [Venice] - okay, I initially reacted 'WTH' but after reading on it I agree, it's impressive
*Terracotta Army, Forbidden Palace, Great Wall [China] - okay
*Mahabodhi Temple [India] - okay
*Oracle [Greek], to be honest I have no idea why Greek oracle is so revered by civ series, countless cultures had their oracles (and they were all drugged or crazy

)
*Stonehenge, maybe I say total heresy now but I think it shouldn't be wonder of the world, it is far less impressive architectural feat than all other on the list, even for its ancient age (has age similar to incomparably more impressive pyramids + there are tons of more impressive monolythic structures over the world)
I'd really love some more Indian wonders beyond mandatory Taj Mahal, cool that Mahabodhi is in but seriously, the subcontinent is full of 3000 years old architectural majestic wonders and in civ series it has always been only this goddamn Taj Mahal (in general eurocentric lists usually equate Indian architecture to this one structure

)
I'd also enjoy architectural wonders of Islam (there are tons of them), South East Asia (Angkor Wat is basically mandatory but I hope for more, Borobudur in BNW was cool) and Subsaharan Africa.
Regarding Precolombian wonders, I'm 99% sure Chichen Itza and Machu Picchu are in civ6.