The much more open system that was first introduced in Black Crusade, then refined in Only War, for character advancement, awesome. To me, it only makes sense to adopt this to a new edition of Dark Heresy. This to be the consent that I am seeing.
Want to do a new edition set in a different sector? That's cool, it keeps things interesting, especially if your group schwacked the Calixis Sector at the climax of a Black Crusade game already, but bring back aptitudes.