Actually, I think Bette Midler is fabulous. And I think she'd be a divine Dolly. I think for Mame, you need someone with a lighter touch, which is why I thought of Hawn.
I don't think either is 'warmer' than the other. Both have showed lovely moments of vulnerability. But, unlike everyone else, I think the idea of an slightly brittle Mame (a la Baranski) could work brilliantly. To see over time how that young boy melts this gloriously fabulous woman could be delightful.
The one problem I've always had with the character of Mame Dennis (although she is an absolute favorite) is how little she changes throughout the piece. She just sort of readily accepts Patrick and then spends the rest of the evening fabulously imparting knowledge. I'm excited to see a Mame who has to work a little harder to let the boy in the damn long pants into her life.
"I'm so looking forward to a time when all the Reagan Democrats are dead."