I agree that there are a lot of variables involved in determining if the offense is going to perform well other than just the coaching.
I also agree that the early indications look promising.
But I think the jury is still out until we are playing against teams that are game planning for us. Yes I think we will be okay. Keenum has looked serviceable, GRob has looked really good and the rest of the line seems really solid. Gurley looks like he will be a beast. Higbee is a nice add and we will see if the offense gets the ball to Austin in space, that is still a big question.
So I am very hopeful and my expectations are high but I want to see execution in a real game. SF shouldn't be the toughest test so there is not reason for us not to succeed.