I've been thinking a lot about some flashback action. Some moments of drama or levity from the characters' past interactions that might inform what's currently going on in the present, or contrasts it in an interesting way.

If anyone else is game on the idea, I'd be more than happy to collaborate...hint hint...nudge nudge...I AM A VERY NICE PERSON WHY DOES NOBODY WANT TO PLAY WITH ME!

Also, flashback ideas:
Talent contest. Peoples hidden talents come out.
Maggie buys a bicycle...everyone dies.
Puck does something stupid. Someone punches him in the eye.
Some of the friends get stuck in an elevator, proximity and time lead to some revelatory conversation. Everyone dies.
Remi becomes obsessed with health and fitness. Everyone stages an intervention.
The guys get conscripted into a beefcake calender to help with recruitment.
The gals get conscripted into a cheesecake calender to help with recruitment.
Remi cannot hold his liquor.
Someone else cannot hold their liquor.
Beach episode. Everyone dies.
Kim has a heartfelt conversation with someone. Remi comes by and says something insensitive.
Kim has a heartfelt conversation with someone. Freddy says something insensitive.
Kim has a heartfelt conversation with someone. Kat says something insensitive.
Remi gets injured during training...no one comes to visit him in the medical ward.
Thael breaks up with his long term boyfriend. Everyone goes out for ice cream.
Competitive campus event. Remi and Jyn develop a rivalry over it. Aaron wins.
Remi and Freddy get lost on a field exercise, have hijinks on the way back. Everyone dies.
Olivia and Em go out for lunch...end up caught in a gang war...everyone dies.
Everyone dies.

On a tangential note. I will be posting in the next couple days. Prepare to be underwhelmed.