Not including the first time the MC and a LI have sex is a peculiar choice.
This isn't a Mira type character where implying that they fucked at some point is enough.
It's an important milestone with a main character... and that's what you cut?

This is specially weird given how long Nyx is says this new version is, you include so much stuff but not their first time?
As for Cara, she will always have a tough time getting out of her sisters shadow... the game wants to select which one goes through here and it's always Nikki.
It's just the structure of the game, only one sister "survives" the flashback, and it's Nikki... Cara gets knocked out before we can get attached to her.
Nyx is trying very hard to give her a fighting chance... but it's swimming against the tide.
I think Cara's original design was cute(her more recent look with the old lady haircut is

) but when i had to pick between the cute girl and her uber hot sister... yeah she's gonna be left behind.
It could be her during the training session... her coach allowed her to train alone.
Val, Layla should be in school during the morning(and we also just had the Val date, it would Val scene>Val scene, some of my friends would like that though
valbitterb Justaphase 
).
Iris, Alexis, Erynn don't go running unless asked... and even then.
It's gotta be a character outside the box, Sha'carri or maybe Brooke.
Sha'carri does go well with what Nyx said that the choice that leads to a happy ending has already been made...
I still think that locking players in on a harmless choice you made years ago fucking sucks, but Nyx seems to have fallen in love with this concept...