As bad as you might feel about your current coach, I don't think anyone outside of Oklahoma can appreciate how truly pathetic the John Blake era was. At least Zook appears to have a plan for how he wants to run his team. Blake's philosophy seemed to change weekly, and sometimes during games.
In Blake's defense, he was getting extraordinary pressure from impatient administrators and alumni to win and win NOW, but some of his moves were downright baffling. He was like a ship without a rudder, and the team's lack of direction resulted in three terrible seasons and left OU fans yearning for the "good old days" of the Gary Gibbs era. Gibbs could at least consistently beat OSU, after all.
There's a reason that Spurrier left Florida now, and it's the same reason that Stoops declined the job. The pantry isn't very well-stocked in Gainesville at the moment. Give Zook time before you turn on him. I seriously doubt he will prove to be as inept as John Blake.
I do have to credit John Blake's recruiting skills though. He left the roster well-stocked for Bob Stoops, who proved that scheming and discipline will win a lot of football games whereas talent alone will win some.