For all the people wondering who are the girls that Sage could be thinking in proposing a 3some with MC, DPC says it us clearly in the very first image of the new season: Camila, Quinn and Riona.
Those images aren't like the rewards, that aren't actually related with the game (We see Riona as a ninja, Karen as MC's secretary, Quinn as a biker, Jill as Lara Croft, and things like those). Those images are like "slices of life" and always related with the game. Actually could be in the game, except that the girls seems to be posing for the camera.
What are they doing in MC's bedroom? I'm not saying there will be an scene with the four of them at the same time (poor MC should need at least two cocks), but it's a clue about what we could expect. When I see this imagen, I see Sage looking at MC (us, the player) and offering them for the next season. It's a promise DPC makes us for the next season.
And makes all the sense. As far as Sage knows, the three of them probably have never had a serious relationship, aren't looking for one, they are the sluttiest and kinkiest HOTs, and fuck with a lot of guys without commitments, jealousy or dramas. And also are close friends of her and MC and aren't related with the DIKs by family or sentimental ties. It's the most logical and safe choice from Sage's perspective. I think those are the ones we'll see in MC's bed the next season, and I don't think there will be more. The number of scenes with Sage (and any other Li) is limited in every chapter, specially since DPC keeps adding Lis every episode, and I don't think there will be more that one per episode. Quinn's one would be repeated, but being Quinn the kinky slut she is, I'm sure she'll find a way to make it different to the previous one.