S3 Group Members Theory
Kenny/Jane (determinant) : If you ended with one of them, they will be with you for a good part of the season, with an unexpected, tragic and shocking death between episodes 3 - 5 . Like carley/doug they will be remembered forever. , I hope that their deaths are not linear. TT have no reason to kill them after 5 mins of gameplay, because they were the most active characters in S2 and we know them for a long time ( especially Kenny, but who chose Jane deserves justice) both deserve a heroic death or something like that. if you abandoned one of them we probably never see them again or we'll find his dead/zombified corpse just for shock value.
Clementine : Maybe will be the protagonist of S3, we are with her since S1, even if she is not the protagonist, has to be in S3
Aj : the writers will probably explore AJ and choices of members to protect him or not. Can survive to the end, or have a tragic death
Mike : His death was removed from the game. every season we have a good person who deserves a second chance. (S1 : Lee S2 : Bonnie, S3 : Mike) perhaps along the arvo, or having left after he cause the death of Bonnie after she confessed to killing his sister (SURPRISE!) I think it was Bonnie who killed natasha and the Russian made a mistake in the middle of shooting. at the end of episode 4 is she who points a gun at natasha, Or maybe Bonnie end arvo will fight to death after she confessing and Mike will abandon them after all goes to shit , i hope bonnie wins, but she is determinant, so, good bye ) we will never see her again. ('m joking about the deadly struggle. but would love to see Bonnie and arvo in a crazy fight, especially if arvo get seriously injured: P)
Molly : I already talked about her in another topic. but I will start again with new points :
1 - Molly status is unknown in all possibilities, no matter what you do
In-Game Decision
Clementine Comes to Crawford (Unknown)
If Lee chose to bring Clementine with him to Crawford, she will kill her first walker, leading Molly to be colored impressed with the girl's marksman skills.
Clementine Stays at the House, Shoot the Walker (Unknown)
If Lee has Clementine stay at the house, he will have to shoot the walker himself. If he manages to do so, Molly will be grateful for having saved her life.
Clementine Stays at the House, Shoot Molly (Unknown)
If Lee leaves Clementine at the house, he will have to shoot the walker himself. If he shoots Molly by mistake, she will fall onto the floor and scream out in pain. She ends up losing her weapon, and runs off in the opposite direction.
Clementine Stays at the House, Miss the Shot/Hesitate (Unknown)
Failure to shoot the walker will result in Molly being pushed down onto the floor. While she manages to fight off the surrounding walkers with her bare hands, she is forced to run away, being separated from the group.
I doubt TT will just cut her off she has so much potential and its history was unexplored
2 - Bonnie is determinant and is gonna die among other factors, because they are represented by the same voice actor, Erin Yvette. they cant meet each other because the dialogue between them would be very awkward and tiring for the voice actor. I might be wrong, but bonnie becoming determinant maybe is a clue to Molly return.
3 - Who is better to warn about the fall of communities like howe or wellington than Molly? she's already lived it before (Crawford) and will be who save clem when everything starts to fall. Your past can be explored very well in this situation. she will figure a plan to kill assholes and escape with the group. will survive to long because she is badass 
Randy : Probably will be developed after the death of gil, broken in a dark place. wait a second...... that sounds familiar. maybe he will cause the fall of the comunity after after trusting someone who is an asshole ( familiar again)
Gil : The kid who will have a tragic death and break our hearts. I hope he can shoot zombies and save someone before. be strong gil, do something please writers make he do important things in S3, at last one before he dies.
Patricia : The good woman who people will care. i hope she didint dies like sarita or Kat. i hope she survives. the good Woman dies for her husband development, what if they do the oposite now? would be interesting.
Edith : I dont know exactly, the good shooter and smart girl. all bless edith.
New characters
Thats it
Comments
I don't think we'll be seeing Molly again anytime soon. But I said the same thing about Kenny, so I guess anything is possible.
I actually thought Molly could die on screen, I always brought CLem with me to Crawford.
I don't think Telltale will bring back Molly, she seems to be a one time thing.
Random group member 1: Dies
Random group member 2: Dies
Random group member 3: Dies because of Kenny
Nah, you can only shoot Molly in the arm and she'll run off clutching her arm, while being chased by walkers.
Woah, the ghost of Kenny killed him.
Spooky ghost.
FLYING war boat!
a bandit named Kenny, in his custom war boat will invade Wellington
Telltale said that Molly was only a one time character.
bring back Lilly and Christa and i'll be happy.
Sames.
Molly wont come back and she shouldnt, really no one else should come back except maybe Lilly or Arvo for conflict,
Also voice actors record their lines on their own not with others
I wouldnt mind a group full of people like Ben/Nick, it would sure be a sick twist.
I dont think anyone else should come back. Also Telltale said they liked having Christa being unknown because in reality you may never know, so for someone like Molly coming back I dont see happening
Agreed. That's the one thing I didn't like about Kenny returning, now every unknown character needs to come back. Lilly, Christa, Molly, Vernon (although he may be dead, I'm not sure, I never played 400 Days but I heard it's revealed or something). Like you said, in reality, you don't always meet up with the people you know. I think it's best for the game to separate itself from Season 1 and Season 2 (not bring back any characters except Clem obviously) and introduce all new characters, that way their development isn't overshadowed by Season 1/2 characters (however, if Arvo, Mike, and Bonnie were to come back and we could kill them, I'd be fine with that).
you're probably right
. i just talked about Molly because for me she is the best character for that tematic " The comunity is falling, I know this, i lived it before in Crawford --------------------- ------------------ ---------------- are assholes who are f****** everything, we need to get the fuck out of here clementine, we need a plan" but they can use a new character for that. still, i have little hope for Molly 
Well I think and hope that they gonna focus the story again on the 400 day characters (I want to play as Wyatt again) and our ending in season 2 will affect what will appening to them in season 3.
Yeah Vernon is dead. I feel like Kenny coming back was fine because they made both his deaths questionable. But like I said we dont need every season to bring back some character with Unknown as a status