So, about "dark events":
We thought Troy could be either Chad's BF or a possible lone gunman (cause of his personality) - I doubt DPC will go that dark but who knows?
More probable thing? Derek doing something dangerous and end up paralyzed, overdose - but since that couldn't be connected with main characters, that wouldn't be so controversial.
Possible suicide attempt? Bella's backshadowing is close to that.
Also, I think there are much more to Maya's and Derek's family than we know so far.
We still don't know almost anything about Jill - it could be really nasty after 0.4 or 0.5.
So - just pick your poison.
I can see Troy having more relevance later in the game, than the one he currently has. So far, he "only" influenced MC in searching for a new dorm, what ended up forcing him to join the DIKs. The only thing we know about his background is that he is a former Jock, and that he has issues against them and vice versa. Other than that, he only had a mild influence on how Bella perceives MC
I also thought Troy could be the gunman in one of my feared and imagined "dark events". He could ending up killing people, or being persuaded to stop the attack before it even starts, or killing himself instead, depending on MC's actions throughout the game.
Derek doing something silly and dangerous is also possible. And maybe we could also prevent it like we could do with Liam, from AL, since they are so similar in personality and plot relevance.
About Bella, much is still unknown, so maybe we'll be able to get more relevant information about her in the next update. Especially since MC can choose to go to her when searching for a place to stay. That part where MC goes into narrator mode when they meet that last time in the library, really spooked the shit outta me.
There is much more to Maya and Derek's family than we know, for sure. MC even hinted he recognized their father from somewhere before and I don't remember ever seeing him until that point, which means it probably is from events not shown in the game, so far. Maya was about to tell MC something more about that regard, before being interrupted by the unexpected visitor.
About Jill, though, I don't think she will be a danger to MC in a Leah kind of way. Maybe she could pose some kind of threat to him in an indirect way, like Tybault going nasty on MC. I can see her becoming attached to him, maybe even obsessed, and maybe even trying to control him a little bit, and trying to change his ways. But I think she genuinely cares for other people, and for that reason alone, that invalidates her as a psychopath type of character.