Will it be Rachel, PJ, One of the other girls on the show or a new girl.
The reason I say this is because I think both PJ and Rachel lack the talent and charisma to headline a show. Both of these girls are kind of cute in real life, but aren't TV network standard hot like Erin. PJ is just too boring. And Rachel is too annoying to root for. I think neither one of then could do an effecitve job during the rejection speech elimination process if they had their own show. These two girls don't carry themselves well enough to be worth having a bunch of suitors for. Actually none of the girls on FLOM 3 could manage the job except maybe the little quiet hot blonde that Preston was too intimidated to ever ask out or keep on the show.
My vote goes for a totally new girl on FLOM 4. I just can't imagin PJ or Rachel having her own show and equalling ratings. Rachel's sarcastic smiles, laughs that sound like she's about to cry and eye rolling get old after 3 shows. Neither of these girls have the grace, articulateness, and poise of Erin. I'll add that I wasn't a big fan of Erin, and Erin had an annoying laugh too, but I'll give her credit where credit is due. These two girls on FLOM 3 can't hold a candle to her.