Didn't Denise comeback sort of unplanned, like she attended one of Garcelle's events as her actual friend, and it went from their. I expect her more a Guest next Season than anything.
Kathy was never going to come back and give Vyle the storyline she wanted after that Reunion, and if we never see her again, well, find a Friend Of who's gone out stronger. Jokes aside, she's filming Paris In Love Season 2, and with Kim back in the fold a bit, who knows if we'll finally get Andy's dream sit down with all three of them by Season 14.
Rinna had to go, she was RHONY S13 levels of bad.