While I appreciate your optimism, the fact that they call the ending "What she (Karlach) deserves" does sound very final.
Well, given the dissatisfaction, I imagine it wont be. This is just a restoration of cut content, which is fine. But there's work to be done which can't happen as quickly as just putting something that already exists back into the game. Give it time, a Definitive Edition or something major will come when Larian has had the chance to take a break, invite actors back, and so on.
