I've only seen the first episode so far but this was excellent. McGregor is great as always and Edgerton nailed his part, I hope we see more of him. I also like what they're doing with mini-Leia.
I also think Third Sister may have been abandoned by the Jedi before turning to the dark side, probably she was abandoned by Obi-wan himself? Though I don't recall anybody Obi-wan had a personal relationship witn in Clone Wars or the prequels that could have become this character, I think if they go that route it'll be through a retcon.