I'll throw Fear Lanier a bone. Parity is so close in the NFL that it's not totally unreasonable to suggest the Chiefs are a good QB and coach away from being a good team.
That said, those are the two hardest things to find in that order. Do you know how many teams without a good QB are a good QB away from being good? Answer: about 25.
Also I think you're discounting the fact that Denver didn't play their best game in a place we never play well, and the Chiefs absolutely did and they still lost by more than a touchdown. You're two missed field goals from us totally boning you guys.
So please do draft a gimicky coach, let Crennel go, which will set your defense back, and draft Geno "I can only make one read" Smith. Let me know how that works out.