Sage meets Mona: NO too early
Riona leaves Quinn: I think it can be considered to have already happened in reality, since when don't we see them interacting?
Josy & Maya spat (split): NO too early, at most in the final chapter, but I don't think so as that would mean it would be a canon event
Fight with Vinnie: NO too early
cliffhanger ending: Yes, certainly, as in every chapter
new blackmail: what do you mean? towards MC? like Jill's? i don't think so.
MC meets Buddy: maybe in Quinn's path, but I would say no.
Patricks comes again: hopefully making a better impression than in the first visit, it might, I vote yes
find out about James: Sooner or later this will also happen, but I would say not in the tenth chapter
first cheating: to the detriment of MC? never in a DPC game
Priscilla is Quinn: No, already DPC plays with kinship, if he also starts making up nicknames it's over
new girl: the only one might be the amschered one with the blue eyes, but I would say no, at least if you mean with a minimum of importance
Sage prologue: was the last one we saw a flashback or a premonition? Sage never had one of his own 100%, it could be I would say yes
Tybalt revenge: against Jill? because against MC it doesn't make sense. i would say no
Burek threats: For those who showed the footage, I would say that would be the case, YES