Fun fact: if you leave Sarevok alive he can send you a letter during the epilogue.
He basically says that even if Withers resurrected you, you'll still pass on your curse to any children you have, and he waits for the day they come to the tribunal so he can enjoy watching them murder each other.
It's absolutely hilarious that the apparent reason why Sarevok does nothing but sit on his ass at the Murder Tribunal all day instead of being at the temple is because Orin beat his ass and the sheer humiliation of getting dunked on by his own daughter keeps him away. I still don't get why they cut that, it's my favourite datamined dialogue of all time.
Thinking about Gortash using Sarevok's old Iron Throne fortress/tower for his own purposes as a prison
and also putting into motion a plan very similar to Sarevok's for becoming an archduke (which in this context is the same as a grand duke, I think, but I'm not knowledgeable with noble titles)
My view on Durge and Sarevok's relationship is that Sarevok actually respected and liked Durge (as much as possible for a non-reformed bhaalspawn) so it's very possible that he had at some point shared his history, old plans, and failures with Durge, at the very least as a lesson for Durge.
Also, Gortash has a line about him and Durge studying their predecessors and their mistakes,
which combined with everything so far, definitely makes me think that the Iron Throne prison and the Archduke plans were at the very least co-founded by Durge and Gortash, if not outright suggested by Durge.
Another interesting side to all this - Orin is attached to her (grand)father (again, as much as possible for a non-reformed bhaalspawn) so it probably pisses her off that Gortash managed to pull off a plan that Sarevok failed, especially bc it was with Durge's help, and it's just one more reason why she's so spiteful towards him. In her eyes Gortash uses her grandfather's plan, uses her grandfather's fortress, uses her sibling and boss in myriads of ways and in turn - the whole Bhaal cult, for his own gains.
Confession: I desperately need the resident Gortash/Orin/Ketheric fuckers to go back and play Baldur's Gate 1 and 2 because they'd be delighted to know there is someone even worse than those three for them to thirst over. I'm talking about Sarevok Anchev. Yes, Orin's bricked up grandpa. Yes, he's the antagonist in the first game. Yes, he's a companion in the second one. Yes, you will want him to break you in two.
Got possessed to make an Orin animatic, i will try to finish by the end of this week! (these are just roughs btw) Did you know her mother was supposed to sacrifice her to become Bhaal's Chosen? I didn't!