I don't think we can really judge Hackett's game plans yet. I admit, the decision to throw as much as we did in Houston is a question mark, but judging by how many times receivers were running open and we're either missed or not even looked at, I think it could have been very successful had it been executed properly.
If we see better, or even just competent, execution from the quarterback position moving forward with Orton, Hackett's play calling and game planning will be much easier to judge.
He had his receivers in a position to succeed in a pass heavy game plan in Houston, but the limitations at the quarterback position sabotaged it from under center.