I think "Remedy" would be a great sing-along song live. It's weaker than "Rumour Has It" and "Turning Tables," if we're comparing it to her other collaborations with Ryan, but I still think it's really beautiful, even if it doesn't pack the punch that some of her thematically similar songs do. Like I and a few others have said, though, it's pretty obvious that it's one of those songs that is just too emotional for her to sing, so we'll probably never get it live.
I was a little surprised by "Turning Tables" not being included in the setlist because it's flawless and one of the bigger songs off of the album (excluding the four main singles, obviously), but she does have a soft spot for "Don't You Remember." Personally, I'd rather have "Don't You Remember" over "Turning Tables," but I really wanted both. They need to just do the original arrangement of "Turning Tables" and include it in her Wembley shows. I really like the idea of having the stage literally turning, like Cockney suggested, although we don't want any more projectile vomiting incidents from her.
"I'll Be Waiting" is a rarity in her discography because it's
so upbeat, and it's a very feel-good song. I blast that song SO loud when I'm in the car. It's just got a great vibe. She needs to do it live at Wembley. "Why Do You Love Me" kind of gives me a similar vibe. She needs to do that one live, too.
As for "He Won't Go," lyrically, I think it's one of her best songs. It's never been one of my favorites (just because there's so many other songs by her that I love more), but I still love it and I think it's really underrated. I hate that she never performed it live (that we know of—I remember reading something about her doing it live once on the old Adele forums, even though there's no receipts to back it up).
And I agree that it seems like we've been waiting for forever for the "Water Under the Bridge" video, but I think she should wait until after the holidays. Maybe she could debut it during Ryan Seacrest's New Year's Eve special.