@V.A.Laurie
Here's my opinion of it, and note, just my opinion.
I believe that all relationships should, err heavily on the side of romance, whatever you guys decide.
Susan can go either way in my opinion, but she has now shown a turncoat or flip as a dom to sub. That would give a good way to continue, to turn, to a more romance rather than Dom/Sub side of her.
I would like to see that she would stop being a slut, as her Dom days had her. Maybe once she has fallen more for the MC, she becomes more of a faithful GF type, and losses her free for all mentality.
The others, well it should stay as a romance, as they are all different, and will all have a different style of romance to play around with.
I like that fact that they are all aware of stuff happening with the other girls too, that will definitely come in handy for the Harem play......Yay!!
Since, I'm guessing, that you guys made a big-to-do about the MC needing to call Dad in this last update, and the fact he never did or didn't have the chance.
I'm suspecting that, Dad will end up sending the Mom home, to see what's up. She'll maybe be a cockblock for Mc and Alice at home, until the MC takes matters into his own hands.
I believe that the Mom path will require a Dom/Sub route, to get things the way it needs to be at first. You'll need to control her at first to allow, you and Alice to have a sexual relationship. Then when you got her basically working for you, and starting a sexual thing with her as well, then the real fun can begin.
I think Alice will be all for it, because it means she will get to fuck you, and build a stronger relationship, because you are basically taking one for the team....Lol!!
Plus it's not a bad idea to have all the girls in your arsenal, if and when Dad comes back....hopefully never..Lol!!
In conclusion, Susan, I say let her continue to turn straight and play faithful Gf now.
As for Mom, she at least for the beginning needs to be Dominated, and I think you guys already had it in game, that she is naturally pre-dispositioned that way anyway and may need to stay that way mostly.
You could still, lean more to the romantic side of it for her, that would probably be better than what Dad does to her currently, and would be the catalyst to be with the MC over Dad anyway.
Thanks for your time Brother...……………………...Peace!!