SPOILERS.
Disappointing overall. I've seen and heard plenty of fan theories and comic book storylines that would've been far better for the story and wouldve impacted "our" MCU.
Wanda as the big bad feels forced, it maybe would've been better or more believeable had the Dark Hold corrupted her. She will coldly kill everyone to get her kids back, yet not consider the predictable revelation she FINALLY has at the end sooner, silly. Couldn't have America simply found a universe where that Wanda could live happily? It would have been cool to see Cthon or an Evil Strange as the big bad.
Illuminati weren't as impressive as I'd hoped. They are supposed to be the best minds in the multiverse.... yet easily killed...borderline Rick and Morty-esk there.
I was hoping for Spiderman No Way Home vibes but sadly not. It was entertaining and visually stunning but not what I was excited for.