First reactions:
1) Yeah, there’s a LOT to wrap up;
2) Inside the Hex continues to be original and interesting, while outside is so cliche that seems to have been written on autopilot (although they did a really good job showing what “real” Westview is like, almost a Stephen King-level depiction of a slowly dying small town);
3) I agree Agatha did not mean to refer to Wanda as a mutant. In fact, she outright calls her “a baby witch facing years of therapy.”
4) Since Wanda was the first to survive contact with the Mind Stone, are we to assume she used her powers unconsciously to make sure Pietro survived?