That wonderful scene, Sue Ellen at her "Don't know what you're talking about" best.
She always loved Southfork even when JR was at his most horrible. She felt she belonged there and it was her right to stay there.
I think she loved the Southern Cross too, but of course her and Dusty were never intimate there I believe.
Sue Ellen would have to replace Dusty with Ray. Not sure he would be up to the job, well obviously he would be in THAT respect.
Maybe he would say, "If you're Mrs Ewing tonight, do you want me to be Dusty, Clint, Clayton, Cliff, JR, I'll be Bobby if you want, or just plain cowboy Ray?