I didn't like Carol Burnett's performance at all. Maybe it was because I was comparing her to all the (stage) Miss Hannigan's I had seen. I didn't like the floozy aspect Carol brought to the role. Miss Hannigan isn't a floozy. I never understood that interpretation of the role.
Kathy Bates, however, brought Miss Hannigan to life in a way Carol did not. I think Kathy could have killed on stage with that role. Unfortunately for her, and the rest of the cast, Disney, well, *Disney-fied* the film so everyone came across as too sweet and nice. Even Annie.
On stage, most of that casting would have worked great, I think.