I honestly don't care about Meredith at all. I'm not a fan of ntr/sharing or anything in that flavor. (I'm not looking for a discussion on the semantics.) On top of that, I'll just say her body type doesn't attract me either.
As for Maxine, her story feels a bit superficial to me. She basically has already become submissive to the MC.
As for the other girls, I'm interested in their relationship with the MC, as it's not (fully) unveiled yet. Not to mention, I find their character models much more attractive looking.
But to each their own.