I believe Arthur Laurents has the right to veto any actress who wishes to play Rose in any major GYPSY revival which is why LuPone wasn't able to play the role before.
I definitely agree with what he has to say about Liza playing the role.
Clark would probably play role in a style similar to Lansbury's while I see Krakowski being more of a "Peters-esque" Rose in 10-15 years from now.
Murphy is pushing 50 so she is actually the right age to play the role if they wanted her to be closer to the age the real Momma Rose was at the time the show takes place.
I believe Bebe Neuwirth would also make one of the scariest Momma Roses, yet quite exquisite.
"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"