Originally Posted by Imagineer1985
It wasn't random. Will consistently mocked Davy Jones or was just an outright jerk to him, due to the fact that Will wanted to get back at him for his father's sake. And if you also remember, Will escaped the Flying Dutchman in DMC, so he still had some sort of debt to Jones...not an official one, but he was a prisoner. Then Jones tried to kill him with the Kraken and failed. Jones had every intent to get Will at some point.
Norrington, I would agree with at first. But if he had lived any longer, I think it just would have ruined everything for all of the other characters. I mean, he kissed Elizabeth (there was a total groan from the audience when that happened)...if he had lived past that, I think everyone would have been ready to kill both him and Elizabeth, and the third film had to sort of make up for the crap they had been doing previously-justify their characters, if you will. And what more could Norrington have done to progress? He really had nothing left. His whole world was destroyed, and he certainly couldn't ever accept to become a pirate himself. It wouldn't have worked.
It also set up the climax that Will would have with his father. The audience at that point still had no true conception of how far-gone Bootstrap was by that point. They needed to see how much of his soul had been wiped away.