I can't get over the fact that Firaxis went out of its way to make the inherently extremely controversial decision of civ switching as invasive, unpopular and annoying as humanly possible:
1) Don't make them optional as in Humankind, no no no, force players and AI alike to make them, therefore wiping out the age old "Sumer can into space" motivation to play the game without any substitute.
2) But also don't focus on making paths as immersive as possible to minimize the controversy, no let's also
- force native Americans to become the US (I guess according to civ7 those noble savages can't reach modernity

)
- already having Maya and Mexico fill the gap with... Inca
- turn Cambodians into Javanese and then Thai (led by Vietnamese)
- give Middle East (!) no modern civilization, just to maximize the frustration of the fans of Mesopotamia

- add Mongolia and Hawaii out of context and without their own regional evolutionary lines (yeah I totally want to be forced to be Chinese first in order to play as their greatest archnemesis)
- don't introduce three African civs from one region, so they make sense, no no let's pick three of the most distant unrelated cultures possible and provide them with fourth unrelated leader
(hilariously this has mildly racist implications of the entire Subsaharan Africa having great cultural homogenity and all "black people" civs being fundamentally similar on the basis of race

)
I don't know what Firaxis market research has been smoking for years prior to this game's release, but the self own of somehow assuming that civ players
1) Are invested in leaders, not civs
2) Don't care much about the obvious 30 year old "ancient extinct civ can into space" fantasy
3) Care about mechanical bonuses WAY more than the continuous narrative and story in their heads, to the point of willing to wipe out their own empires in the name of getting the new toys
Should be the legendary cautionary tale for a long time how to completely fail to grasp your fanbase.
It's the meditations like these which make me *want* to believe that hilarious glassdoor rumor about devs going on the catastrophic ahayuasca trips, it would fill the gal in my mind with much needed explanation