Why would Pete change his philosophy when it's working so well the way it is being Coached up?
I could see him working with his philosophy in ways to try and eliminate the mistakes that are being made, on the Defense, and work towards perfecting the pass rush.
While going up against the Defense in practice, Russell Wilson's skills and athleticism helps to hone the Defenses up, to be even better on game days.
I watched A Football Life about Randall Cunningham today, and it was mentioned that Defenses were unable to practice against his style of play, because there was nobody else in the League that could come close to duplicating the way he tore Defenses up.
His downfall was trying to do it all, and by himself.
I see Wilson as a Quarterback along those same lines, although maybe not quite as athletic, but every bit the enigma on tendencies, plus, he doesn't try to defeat other teams all by himself as Cunningham was prone to doing.
After only two Seasons under his belt, I see Russell Wilson only getting better at his job, as there is a hell of a lot to digest in the Quarterback position, and I don't expect that any Quarterback can even come close perfecting their game in that short of time.
Nowadays, Defensive players are getting scary faster, and that forces the learning curve to be sped just up to keep pace.