Most likely you are right, I really do hope Eva has some creative ambition for a bit of extra branching here and there though, so everything isn't just route-consolidations and railroaded drama.
It doesn't necessarily have to be super player-dependent though. Perhaps Cindy and Wade will always break up, even if temporarily, and Wade will therefore always need a new place to stay, thus removing a variable state for Wade/Cindy staying together. Then who moves into Louise's could depend on Ian's status.
I guess it could be kinda fun if we get some rando moving in temporarily. Or Gillian! Wouldn't that be exciting?
It could, if used, of course also just be used to move Holly away from her parents. Bring her close to the center of events.
That would imply Emma hasn't experimented before, I don't think she's ever made any indications towards her relationships with other women, has she?