I don't think Firaxis would agree with any of my feedback because I think I disagree with them in a fundamental sense about how the game should be oriented. Mandatory disasters appear to be a fundamental part of the Civ 7 game philosophy: you build your civ, face the crisis, reset your civ in a new era, and start over with some amount of carry-over. I get the motivation: by forcing these soft resets, Firaxis is making it so you can't snowball so far ahead that the mid/late game is a chore of uninteresting gameplay. An advantage in the first/second eras won't put you in so far of a lead in the third era that it's just a rush to hit the next turn button. On the other hand... that also means that everything you do in the first/second eras counts way less, and that feels bad.
Granted I obviously haven't played the game yet; this is just my read from demos and press around the game/design philosophy. We will see if I'm right or not.
Hard disagree. The district system of Civ 6 was half-baked, and the new one for Civ 7 seems way more interesting with districts growing more organically. Civ 6's world congress was garbage. The eras system needed serious work as dark/golden/heroic eras just didn't feel impactful enough aside from getting a monumentality era early. The new map generation with navigable rivers is a huge plus as well. The climate system in Civ 6 was a dud too, not nearly impactful enough. I think they could've made a Civ 7 which fixed all the broken Civ 6 systems and made a great game.