The Grand Inquisitor Died Because He Was Not Interesting or Important

The Grand Inquisitor doesn't die because he's in Rebels, which takes place after the show. The inquisitors go to the planet that Obi-Wan Kenobi is on just by chance. Out of all the inquisitors that wants to kill him, they're by chance. They found a Jedi ship and tracked it to Tatooine. It seems to be that she wants them to be hunting Kenobi, but the other inquisitors are like, nah, it's pointless.