I think what's not going to happen is HT coming back. It's more likely than VR coming back, but I just don't see it. For me, she's the only other Victoria, I want to see. I like AH enough that I would never want to see the role recast for some random newbie. Not after 10 years.
I also think that SS is trying to make Victoria a little more the way she used to be and that's why she's being written as kind of hard towards Reed. It's kind of jarring.
The sight of a pregnant Sue Ellen Ewing with huge hair drunk off her face, throwing nasty glares and passing out with bottles all around her, will NEVER not be funny. It's every bit as fun as the first time you see it.