Probably been discussed in various other threads but I wanted to make a quick post here about it for people joining the next few days:
1) The founders pack skins are on by default. I suggest starting games with them all unchecked. They should have been off by default. My Tecumseh game was marred by a culturally inappropriate founders edition Civ 7 palace
I imagine many people will unfortunately play the game with the palace not changing based on civ choices, which is a shame.
2) Selecting and unselecting these during a game does nothing. You unfortunately have to check/uncheck and reload a save game.
1) The founders pack skins are on by default. I suggest starting games with them all unchecked. They should have been off by default. My Tecumseh game was marred by a culturally inappropriate founders edition Civ 7 palace

I imagine many people will unfortunately play the game with the palace not changing based on civ choices, which is a shame.
2) Selecting and unselecting these during a game does nothing. You unfortunately have to check/uncheck and reload a save game.