I agree with your thoughts about the HC. Almost without exception, when teams change coaches, they go through a growing pains period. Do you really want to take a team on the cusp of the playoffs and put them back another 2 years? Remember that key D players like KW don't have that much time left.
I, too, have not seen any definitive evidence that players are revolting against the HC. If anything, it has been refreshing to see how much fight they have when things aren't going their way.
As far as the OC is concerned, it's hard to make chicken salad out of chicken feathers. Remember the scorn leveled at CJ because all's he wanted to do was bounce it outside, something that wasn't effective, at all. I like the smash mouth running into the middle, even if they don't bust things lose. It's boring as hell and is exactly what you want to be doing to keep your QB alive. Remember, the second option when KO goes down, is to bring in EJ., THAT'S SCARY!