Okay, after my week holiday I've played 0.0.6. Obviously, don't read the text under the spoiler header if you haven't played the update.
Nice, I love comments like these that go deep into it.
And you got the right idea of the design of the game.
1. You can try to play it
as faithful as possible (except for the first Foursome scene which you can't escape).
2. You can
focus on Sharing and/or Swinging, where the MC has control and CHOOSES which girls can get "in contact with" which guys, including other MCs, MC's friends, random NPCs, and even antagonists.
3. You can
go all out after NTR. With some scenes caused by MC's
mistakes or lack of attention, some scenes caused by the girl
cheating, and some scenes caused by
losing the control during Sharing scenes (all depends on choices).
Of course, you can mostly choose the route you want for every girl (mix and match):
-You can keep your favorite girl while Sharing the rest if you desire.
-You can keep all the girls with a specific MC while making another MC share his girls, and a third MC getting NTR'd.
Dividing the routes in 3 from the start is a cool idea.
And about the Sophie scene:
Yes, a good chunk of it was taken directly from the Beach DLC.
This was a little bit by design, as that is the
last time the MC is using his knowledge of past loops to get a scene, but I also didn't want players who didn't play LT to miss that plot.