Choreography of the Vader vs Obi-wan duel was very good, but the location was as grey as their first duel and they blatantly ripped a scene out of Rebels. I had predicted they’d do something like it, but would find a way to mix things up a bit, maybe have all of Vader’s mask come off this time… but it was just too similar for me.
And as has already been mentioned, there’s no reason for Obi-wan to leave Vader there. On Mustafar he could safely assume Anakin would just burn to death, but he would never make that same mistake twice.
As much as I loved the relationship between Obi-wan and Leia, as well as some of the side characters, this series remained just good - although with many strange choices as always. And the ripped mask scene convinced me that these live action Disney+ shows will never accomplish anything as striking as Star Wars has in animation.