Hard to know. Personally I think it's an upper management issue. Once you bask in success for too long (or, really just any situation too long), it's easy to become stagnant...complacent...and narrow minded. If management doesn't MANAGE, doesn't give GUIDANCE to the many developers who are probably confined to their own teams and never get together often enough with everyone to discuss the big picture of what they're trying to do, then everyone is only there to collect a paycheck. There is no passion. The guy whose sole responsibility day to day is coming up with new shaders or new ghost projections doesn't have to care about how the raids turn out... He does his work, and turns it in to the team that'll integrate it. Job done. As far as what feedback they listen to...again, hard to say, but I was here during the early halo years, on the old forums, when Bungie was far more active (and also smaller), and I remember them caring (or, at least portraying a convincing illusion of caring) and considering feedback far more than they do now. None of the boilerplate "we're listening" bs we get now. It wasn't perfect then either but...it was at least SOMETHING.