I have to say that I've waited till they upload the video (which in my country was really late at night), I like it, but it did not worth the long wait lol.
For me... alone was great, Keiko was awesome, and I like how Joelle sang the song (specially at the last tastiya), but something was missing, I don't know what. I don't think Keiko was uncomfortable with Joelle, but there wasn't any harmony between the two of them. I would love to listen to Kaori and Keiko singing that song.
Bloody rabbit was spectacular, but as some of grunty-san said, it's a kajiura-live song, any four singers would do a great job; I thought Kaori would do Wakana's part, but Joelle did really good, and that violin solo was the best part of the medley. Nothing else to be said.
Then contractor, I like how Joelle and Yuriko started the song, It was a joyful beginning. Joelle solo was ok, nothing outstanding. Yuriko's solo surprised me, I was expecting Keiko on that part, but it was cute. Keiko was outstanding, her voice went really deep, I loved it. It was nice how Kajiura gave Joelle, Yuriko and Keiko a solo, but I would have prefer Keiko to lead the entire song (preferences).
About the girls performance, Joelle was the most energetic one, and Yuriko will always look cute singing. Keiko gave me the vibes of being extremely professional (similar to her performance at Kala's 10th anniversary), maybe because she was to emotional of singing again with Hikaru, maybe because of Joelle, but who knows. Kaori was professional and predominant on the stage as always (even when she didn't have any lead at those songs).
In overall, it was a good live, but as I said, something was missing, and I don't think it's because of Joelle and not Wakana. Maybe is the fact that they are not singing together as much as before, and they lost their harmony capability, yet, I'm just assuming.