It feels like Charlotte/Tiffany is still the plan because they're teasing Iyo Sky facing Rhea, but I wouldn't be mad at Rhea facing Charlotte.
The segment on Monday sold me when I had no interest in that match before. The idea that Charlotte still looks down on Rhea and sees her as a kid despite everything Rhea's done to elevate in the last couple years is interesting. Rhea's been getting a lot of Superman booking, so to go up against the ultimate Superman in the women's division and put her down for good is a story I can get behind. It makes Rhea vulnerable, forces her to fight from behind. It humbles her, which is what you want from her as a face.
I feel the same way that you guys do about Charlotte, but she's one of the few women that can make Rhea feel small, like there's a level she's still not on. They tried it with Becky last year, but there wasn't as much heat.