I am in partial agreement on the trust issue. The reason I say "partial" is because I am quite certain that Harbaugh realized from the beginning that the defense would be exceptional but the offense would be sketchy. (The STs were a bit of a surprise even though hopes were high due to Seely's rep.) However one defines "sketchy" is pretty much an individual perspective because JH will never discuss it. My take is that he felt that if the offense could just avoid killer mistakes they could have a somewhat better than .500 season. Harbaugh said he felt Alex Smith would be a winner from the start but the fact they went after Plax and then Edwards clearly showed he did not have the same confidence in the WRs as he did the QB.
So, from the start he was not going to put the offense in a "must win" situation with so many new things in place. The result, play calls were very safe. Looking back they were probably unnecessarily safe but that is hindsight.
Now we come to the chicken/egg part where no one knows whether the trust issue was that Smith didn't trust the WRs or JH didn't trust Smith, and we will never know. The closest we will get to an answer is what we will see in September. I am not worried about bringing in new receivers and the time frame to learn the system. Given how much the team learned in such a short period of time last summer, I am fully confident that Harbaugh will have whoever it is, be it rookies or FAs, up to a reasonable speed to be productive by game one.
Oh, I know Harbaugh has said it takes 2 or 3 years to fully learn the system but that is just smoke to prevent overly optimistic expectations. He and his staff proved this season that it doesn't take all that long to become effective. Given a couple of WRs and RG, I am confident Smith will turn it loose just as he did in those numerous key situations where he had to make a throw and he did. The Championship game does not bother me all that much due to the fact we had practice squad WRs on the field other than MC. The fact is, we saw Harbaugh and Smith go farther than anyone dreamed from last season to now. I expect to see a much more diversified and confident offense next fall than we have seen since the days of Young, Rice and Friends.