I wonder how many defections of core people there were after HS? Not that this is abnormal but iirc nAo and DeanoC have moved on to other projects (feel free to correct me on this point). It would be cool someday if some internal guys did some writing on the ever shifting face of developmental teams and how it impacts development (good and bad).
I too am curious what kind of changes NT went through after HS, including their relationship with Sony.
Anyway, HS showed some great game design and presentation (in addition to obvious technical achievements) but I always felt a lack of experience in the whole picture.
Hopefully that won't be the case for their next game.