Has anyone who worked on the game ever given any insight into trouble behind the scenes during development? Currently replaying the game and it definitely feels somewhat... neutered, like they wanted it to be longer, more open, and/or more reactive but couldn't do it. The stuff with Slackjaw and Granny Rags goes basically nowhere, for example. Hell, even the Outsider is barely used for anything outside of giving Corvo his powers; I think the only other time he shows up (not counting Shrines) is during the epilogue.
Slackjaw and Granny Rags do have an ending with their reappearance near the end of the game. You get to pick your poison: human evil or spiritual evil.
Not a massive plot segment but it doesn't "go nowhere."