Jay. Though I always thought his relationship with Dawn was amaaaaaaaaaaazing. She was more like a mother/sister/friend than a substitute mum. So, sooo glad he may potentially leave the Mitchells. I hope he changes his surname back too if he officially changed it.
Janine definitely. Much as I loved Pat and Frank she's a character who can do well with or without a family. I quite liked her scenes with David as well.
If she ever returns she'll have at least one family member in Scarlett around though.