Quick note on week 1... while OAK hasn't played yet, it would require a big upset for them to change my mind, but I still believe they're destined for 4th in the division.
The AFCW is KC's to lose - they're going to be too consistently strong on offense (barring injury) for SD, DEN or OAK to think they will wrestle away the division.
Denver looked decent in their win and SD put up a lot of points, but mostly in garbage time. Rivers, Gordon and Allen will create issues for many teams - but just as years past, they struggle too much early and rely on the rally.
KC kicked things into gear on the first play with a huge score... Tyreek Hill is the straw that stirs the offensive drink in KC. Yes, Mahomes was rock solid, but that offense cannot lose Hill. Hunt, Kelce, Watkins, etc - there are a lot of playmakers, but Hill is a dynamic that few teams can contend with successfully.
Question is - does he blow up early and then go into the tank for a stretch like he did last season? I wouldn't bet on it (and I hope he doesn't because he's my #2 fantasy WR

)
Almost onto week 2.