Well, I would absolutely run more. Even if we are not averaging 4.5 YPC, I would commit to it. It's really more about making the defense believe that they have to account for the run game. If you know that we are only going to run 10 times at most, the smart thing to do, as a coordinator is to play for the other 80% of tendency and bet that I will be successful.
We all know, especially anybody who has actually played or coached on the OL, that it is, in fact, easier to run block then pass block. You ask your OL to pass block 50 times a game and you are asking for trouble. Injuries sustained by simple fatigue become problematic. Over the course of an entire year, you see your OL break down. You see more injuries IMO. The math is pretty simple here. You have to be able to save your OL. Running the ball does this, even if it is not as exciting as throwing the ball 50 times or seeing Dez go for 150 yards, etc. Coaches like Parcells know this and believe in this. I'm not sure that our coaching staff does. You run the quick tempo offense with a lot of passing and it's great if it works but how many times do we see our team make mistakes, especially when they get tired? Those mistakes kill drives and what we see are poor down and distance presented to our defense. They are on the field too long, early in games and they wear down late. We see it every single week almost. Running helps that and so does tempo. We don't have to always be running quick tempo passing offense, especially when it isn't working.
The OL can be a powerful aid to a QB. Let them wear down the defense. Don't put it on the QB to beat the blitz by simply making fantastic plays downfield. Let the OL physically punish these smaller defenses we see so much in the NFL. Allow them to do what other teams are doing to our Defense. That will help the QB more then any 4.3 6'5" WR will.
JMO