I find Quinn interesting in that she plays differently depending on what track you are on.
For MJ, she is the cause of most of Maya's worries about whether she can stay in college, and is what is stopping her from moving in to the HOTs house and saving the money she has to spend on dorm fees. The fact that Josy doesn't have a problem being in the HOTs house with Quinn there drives a wedge between her and Maya on every track.
In Ep8, Maya asked Josy in detail about life in HOTs mansion. The only problem that does not allow Maya to live there at the moment is the lack of a free room. Quinn's room is understandably not an option, and Sage's room is too small, even if she don't mind.
In Sage's track, she's the duplicitous backstabber threatening everything Sage has done to make the HOTs successful even though Sage trusts her to do the right thing for the girls in the sorority, yet another of Sage's blind spots that potentially will bring her down as well if something goes wrong with Quinn's business ventures. If MC is on either of these tracks he's going to get pulled in and possibly down by Quinn's actions.
There will be an obvious conflict of interest in every sense of the word. Sage is a Jade's "daughter". While Quinn works with Stephen, any revelation of Quinn & Stephen relations and their business will start the real storm. Quinn's drugs things will be a bonus as well. Jade hate Stephen and want a revenge. I think outcomes for MC will depend on whom side he taken. If he is with Sage, then he probably have to help her with Quinn and Stephen, while when he is with Quinn it will place him in much more shitty position. He will probably have to choice the side again - stay with Quinn and betray Sage or switch to Sage side finally. It adds some extra spice if MC was on Quinn's path, but chose Sage in the EP8 end.
Quinn doesn't have much of a role in the Jill or Bella paths other than causing background chaos, and neither of them are going to be in your path unless you are CHICK/Neutral which Quinn hates.
While J&M and Jill are antipodes for Quinn and block her path automatically - maybe it could be so. But Bella is the next one to Sage, who you able to romance with Quinn together and then dump Quinn later. Quinn was quite interested in "mummy" which joined the party and she even picked her for costumes competition probably for reveal purpose of who is she (or maybe she already had a clue and wanted a public Bella's reveal). So, if MC dumping Quinn while being on Bella branch, it could lead to a very cruel Quinn's revenge later.
And you can end up with Quinn having a Neutral affinity. Her last affinity check is in EP6, then you can stick back to Neutral.
That may play a factor later on when Quinn sets you up to take the fall for something she's done, or doesn't warn you about something that's about to go down, perhaps having to do with Vinny. For MC on a DIK path she can become a totally different character as her attraction to MC grows and she begins opening up, something she never does with any guy, and there can be a real relationship with her. Very well written and an intriguing component to the story.
It will depend on how she treat MC - is he just an another chess figure to her or something more. The fact that she first of all tries to drag MC into her shit as a bodyguard (so as not to lose a bag of money or drugs again) hardly speaks of good intentions. Most likely, there will be only 2 path for Quinn - when the MC is with her, or when he chose someone else. It is also unlikely that Quinn's path will be divided into "good" and "bad" and it will most likely directly depend on the choice of Sage or Quinn's side. Although the ending like the one when Quinn "fixed", apologizes for all the shit to Sage and they all go off into the sunset together is not bad, but it's not a DPC style and smells like cheap cheesy plot.
