I'm surprised no one has mentioned Joe Mantello so far. At the time, I remember a lot of people talking about how he didn't tap into any of her potential, and instead let her wander on stage without much guidance. This was during the early post-WICKED years when Mantello was involved in any show that had a star.
She has said that she at least wants to do another show now that she knows the particular demands of doing stage. She was fantastic in THE NORMAL HEART (despite the asinine Ryan Murphy at the helm), and quite good in AUGUST: OC. I'd love to see her do something that fits her well, she'd have been great in OTHER DESERT CITIES.
"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"