I thought the series finale was a little rushed, up until the final 10 minutes - which may be my favourite 10 minutes in the MCU. Unfortunately Pietro and Hayward were dealt with a little too quickly and easily in my opinion, but I have far more positive things to say about the episode than negative things.
Elizabeth Olsen, Paul Bettany, and Kathryn Hahn deserve all the love for their brilliant acting, and Christophe Beck deserves all the love for his beautiful music throughout the series. The ending of the show was so touching, and I like how when the hex has vanished, Wanda is standing in the same spot where she started it, and in the same clothes. It’s as if the whole thing was a dream.
The big complaints I see about the finale are from comic book fans disappointed that there was no multiverse and no Mephisto, in the end. With the amount of teases, mystery boxes and red herrings in the show, I don’t blame them. But - from the perspective of someone who’s never actually read the comics - I appreciated that this was first and foremost Wanda’s story, and it never got sidetracked from that.