I don't know, I think Maya was very much Maya during the movie date.
I know people get tired of Maya being the damsel in distress; I do too. But Maya's clearly on an arc that will take time to play out. Seeing her expressing interest in a young woman who ran away from an overly controlling father feels like a very natural step on that arc, to the point that I wonder what will happen in playthroughs where the MC visits Josy instead.
It's certainly less than ideal, but I think it can be tolerated as long as the episode itself delivers once it's released. IMHO, Episode 7 did so in spades, so I'm willing to give DPC the time he thinks he needs for Episode 8.
I'll reevaluate if and when that changes, but for now DPC puts out content at a rate that's hard to match. Ultimately, I'd rather get that content as a decent chunk of story progression over long intervals than as tiny chunks of story at a more rapid pace.
Are we talking about the fraternity, the Status/Affinity system? Despite using the same name, they really aren't all that closely related. (Hell, even the Status and Affinity systems are fairly different.)
The fraternity is pretty self-explanatory IMHO: it's a newly formed party frat. Some of it's members are more committed to partying than others and each has their own style, but the overall thrust is pretty consistent.
Of course organizations change over time, and the DIKs do appear to be in a period of transition with Vinny gone and the MC taking an increasingly prominent role. But that's more about story arcs in future content. It seems pretty clear where the frat is starting from.
(Also, my take on Nick is that he follows Sage's philosophy: part hard, play hard, and don't let one of those dominate the other.)
As for the Status/Affinity system, I think it's less about overall morality than it is about methodology. DIKs are brash; they don't apologize for putting their own desires front and center, and will even favor doing "outrageous" things just to prove the point. CHICKs are measured: they seek consensus and prefer not to impose on other people more than necessary. But neither position has direct bearing on the character's core values. A DIK can still care about other people's desires and a CHICK can still hold a grudge, they just have different ways to express those feelings.
Of course the whole Status/Affinity system quickly disintegrates if you try to delve too far into it, so some classic morality does bleed into it (most infamously with the "Crying Steve" choice in Episode 2). But I think the idea is to be more about style than value.
As others have said, I think there are clear reasons why Sage didn't have a guitar lesson in Episodes 6&7. To me, the real question is why the MC will only give her a guitar lesson in Episode 5 if he's her fuck buddy.
My first playthrough of Episode 5 was happened to be on the Sage path, so I was really looking forward to seeing how that scene would play out without the kiss. It turns out it was just omitted completely.
Sadly, I fear this is the real reason we haven't seen any more lessons since: they were just a means of getting Sage and the MC together, and are no longer needed now that they are. We'll probably see another one someday as mixture of nostalgia and a way to iron out some future threat to their relationship, but I doubt they will be a regular feature. Which would be a shame, so hopefully DPC will prove me completely wrong.
Hang on, am I the only one who's been pondering Maya/Sage since the last update?
I mean, we know Maya's feelings for the MC took root when he expressed sympathy and compassion for her at her lowest point. And we know she's normally attracted to girls a lot more than boys. Episode 7 ends with Maya confiding some of her darkest secrets to the exceedingly female Sage, who vowed to do what she could to help. The math seems pretty clear here.
To be clear I'm not saying Maya will leap straight into Sage's bed. I'm just saying it would not surprise me if Maya developing potential feelings for Sage becomes another drama-filled subplot as the game continues.
Or that DPC hasn't gotten around to writing Rooster content yet and thus has no clucks to preview. I think that's a much safer bet.
It may be a flashback, but if so it's only flashing back a couple of days. We see Stephen and Jade invite Bella to a Friday night dinner in Episode 1. By the following Monday in Episode 2, the MC can already pick up on a frosty relationship between Jade and Bella. Episode 3 starts later in the day on that Monday. By Episode 5 (roughly 5 days later), Jade is so intolerant of Bella that she won't commiserate with Cathy simply because it would mean spending time with Bella.
The simplest explanation by far is that Jade had a perfectly decent relationship with Bella prior to the date we see arranged in Episode 1. During the date Stephen and/or Jade propositioned Bella, and she shot them down hard enough for Jade to hold a grudge. There are certainly other possible explanations, but they require a lot more supposition.
Hence why I don't think the Jade/Stephen scene at the start of Episode 3 is much of a flashback: it can really only take place in the period from Saturday to Monday (unless we think it's a flashforward, I suppose).