In terms of sex stuff, for me many solo paths are already burnt (Julia, Daphne and Natasha), others are on their way to reach this point (mostly Barbara and Lori because Hailey's still can be extended with the dom/sub content we've seen in the last update), we have Cassandra's with a lot of room to add nasty interactions with the MC and finally Gillian (that's her name, right?), who's somewhere waiting to be fucked by the MC and Cassandra at the same time.
With all the solo stuff combined, I don't think you can get much more than 3/4 more updates, so either the devs start planning solo endings with certain females (extended to make them entertaining, and probably not with all of them) or they add group sex scenes. My choice? The second one also adding toys to the party (Julia being
analyzed by the MC while she's riding Daphne's strapon, Daphne teaching her dirty little maid how to satisfy a man with her strapon while she (Barbara) is sucking the MC, Cassandra punishing Natasha's butthole with the famous dildo while she's riding the MC saying
remember, he's mine!, Cassandra accepting Julia's dare and getting fucked by the MC in the ass, both the MC and Cassandra taking Gillian to heaven, etc.).
Certainly there's room for more updates with tons of fun without having to bother about the story (the what?

).
Regards