I don't mind them together, and I don't actually mind them with Raffy (I think it made sense for her to live with someone else as the Morgans had a lot going on...Brody taking drugs, Mason and his accident, Tori with the pregnancy, the Ebony/Hazel stuff), but do think they come across as overbearing at times. I also feel like it means Raffy rarely spends time with the Morgans now. Marilyn especially never used to be like that and was a bit more level-headed.
I didn't really like them arguing over 'lets foster again' when Ty had just left. It just seemed like they were trying to rush into it. Hopefully now they won't bother as I don't think its been mentioned in ages.
I'd prefer to see Leah foster as she's younger and has been around the most for Ryder, plus Hunter when he was on the show. (I get she thought Hunter was her step-son for a long time but even when he turned out to not be Zac's and he left, she was still there for him)