I like Pioli in many many many ways... but I don't like the current culture at 1 Arrowhead and I just don't see us winning under him unless HE is ready to do a 180 and give up on a lot of his old ideas and habits.
Pioli was a success under Belichick because he was UNDER Belichick.
If Pioli stays, Clark needs to demand that a coach with that level of control is hired to replace Crennel. Unfortunately that means a retread instead of an up-and-comer. That isn't the direction I'd prefer, so in the end, I'd rather Pioli go.