Gortash was a victim of cut Upper City. He's so devoid of dialogue and interaction unlike Ketheric and Orin. It's pretty clear Ketheric was gonna get Shadow Cursed Lands, Orin Lower City and Sewers, and Gortash was going to culminate Upper City with the patriars and dukes and the House of Wonders. They cut Upper City and just stuck him in Wyrmrock Fortress.
No opportunity to bring up in dialogue with him his past with his parents, Raphael and the House of Hope, cannot ask Raphael about Gortash despite their history being the reason the events of the game got rolling, and even when you deal with Gortash, the dukes and patriars have zero dialogue, in fact many of them stay on pre-coronation dialogue on the lower floor and none of them can be interacted with in real cutscene dialogue. The entire Upper City aristocracy is shortchanged in the game because Act 3 is unfinished.
