Why does it deserve a sequel? You have yet answered this question to my satisfaction. Story wise, character development, and their interaction with the rules system given gives NO ROOM FOR A SEQUEL. Also I don't care what happened to Revan. Revan's tory and relevance ended with the first KotOR. He was at max level. Exile's relevance ended with KotOR 2. He was beyond what is the max level for Star Wars d20.
A game with a poor story, poor characters, poor support, and poor rules implementation does not deserve a sequel.