No need to go to "dark places" with your thoughts here...
DPC once made it VERY clear that this game will not get that dark like AL. And nothing so far gave it away that is gonna change...
Overall the "darkest" things happened, i think, will maybe that someone will be put in jail, and things like happened with Mona... thats about it. Yeah the game is about drama, but not really that dark drama.
About the throuple, to say that MC and Josy will "ditch" Maya is the wrong phrasing i think... To me it seems, that everything will lead to a temporary breakup between Josy and Maya regardless what MC is doing. Its all about college life and if it will not work out, they cant be happy together for a time being... like we already saw. After the scavanger hunt Josy decided to stay at the HOTs and maya was left behind. That was CLEAR break for a short while... they managed to overcome that a little. But i think the Burke-thing will blow up, no help for Maya here. And after that she will of course not join the HOTs and that will lead to a breakup between Josy and Maya again, this time "more official" though i think... And one of the two will fall behind cause the MC has to choose... or if you are not on their path they will stay alone. Iam pretty sure that is the way it goes early on in season 3, maybe right at the start of the next episode... everything is heading that way. Even the "bad feelings" from Josy before that very scene.
But i DONT think this will be permanent. During season 3 they will work on their relationship and at the end of season 3 i think there will be multiple outcomes... Soloroutes between MC and one of the girls, a working throuple, or if the MC is not involved a permanent breakup between Josy and Maya or they will be couple...
But i do think they will have another breakup coming before that. Just the whole J&M thing is build up like it will break again for a time being. And after that "break" everyone needs to figure out a way to go from there... but i dont think that will lead to "dark" places.
I know everyone has AL back in their minds... but again, being a dik is nothing like that, and DPC made it very clear that it will not go places like that... And i think it would change the tone of the game way too much... AL was never this "funny" "easy going" like being a dik... yeah of course there are some serious tones around being a dik too, but AL always had a much more serious vibe overall.