I don't even think Julie has that upper range for Galinda, that role is so high. Julie has.. had.. HAS (sorry, couldn't help myself) plain not-too-high soprano. Granted, she had the sweetest and purest plain not-too-high soprano voice.. I couldn't really see Julie play cutesy.. as she BASICALLY invented the Broadway ingenue. And Glinda is not an ingenue.
But I'm just being nit-picky.
Bernadette is too sexy to play Glinda. She's invented the sexy cute. Not quirky enough.
Again, nit-picking.
Liza playing Elphie.. I could see that. And during defying gravity she could reach out her arms in that spaztasic way that she does, and do that weird desperate grabbing motion she does with her hands. It would be brilliant.
Personally, I think I have too much bloom.