The problem is Shamahan's arrogant ego. If Snyder tries any of these suggestions, much less requires any of them, Sham will walk. And all the kings horses, and all the kings men, will rain down on Snyder, for meddling again.
We are stuck with Sham, and anything he does, for the rest of this season, and next. If we're not in the playoffs then, Snyder can do whatever he wants, and no one could accuse him of being impatient.
Of course, Sham's minions, will do so, regardless.