I don't want any of them to leave the show either, but if I had to pick one, I would go with Charlotte. Yeah, she has the other job, but what if she can't take the pressure of being replaced? Ohhh, I hate theories so much Naomi is weird, but after Sam confessed that he's still in love with her, she mustn't leeeeave! Remember the hot scene on the table in the practice? I want more scenes like that! The fact that we need to wait until September is frustrating.
For some reason, when the whole pregnancy stuff began with Violet, I just didn't see the whole story end like Violet holding and raising a baby in the future seasons. Somehow I still don't see any babies in their lives. Maybe because nobody has a baby on GA either (except for Bailey, but that's just totally adorable). But I don't see a PP character with a baby. Maybe it's just me, though, and this doesn't mean that I want the baby to die, hell no, I want both the Violet and the baby to be okay.