Okay, Astarion origin run.
We're all well-versed in getting his approval and romance arc, but what are we collectively thinking he'd be most-likely to do without Tav/Durge around? As, himself, the de-facto leader of the group?
With Tav/Durge around he really only needs them on his side; they'll protect him from the rest of the party and he's pretty free to be as honest as he wants to be with his approval/disapproval of things. Then, obviously, as things progress we see the growth from or cyclic regression into his trauma and the ways in which we, as the player, have influenced his outcome.
But, without Tav/Durge, I'm thinking without that, yes, he'd still be trying to manipulate his way into everyone's good graces BUT, as not just another member of the group but its LEADER, he's now going to have to be MUCH more mindful of what everyone else thinks of him.
All those snarky, naughty, murder-laced quips we love so much? The constant angst against helping other people? The impulses to instigate or kill instead of talking things through with anyone that annoys him? Power-hungry interest in the tadpoles/Absolute? He's going to have to try his 10 CHA best to tone ALL that shit down if he wants to befriend everyone instead of focusing on a single source of protection.
He's gana be both mentally and physically exhausted, more-so than he would have been otherwise, and he's going to be even more scared of all the things to come because he's gotta be the face spear-heading the group - the meat-shields don't work as well if they're behind you, after all.
Alao: the big Feelings revelation, positive or negative, he can have post-Araj? Entirely moot because the other companions don't seem to comment at all -it's solely, 100%, his choice.
So, if he has a turning point in an origin run, what/where would it be? Is it an even slower story than the one we love from romancing him as a player? One that starts from the beginning, when he, suddenly free of Cazador's immediately influence, is thrust into the position of group leader and everyone just... goes along with it?
Is it him eventually realizing that he cares some amount for ALL of these people? Maybe because they all respect his autonomy? Respect it so much, in fact, that they seem to follow him near-blindly?
Or would there not be as much personal growth for him, being in charge of this haggard band? Would he find security in having “followers” that defer to him and be even more sure of his need to accumulate power?