Victoria Clark is the most obvious choice, she was fabulous in the part and it'd be very interesting to see her take of Sally in this particular production and also having more rehearsal time than she did at Encores!
I love the idea of Megan Mullally in this too, and being LA it makes perfect sense that she'd do it.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"