I agree in principle with several points you make. First, ideally you are landing a quality recruiting prospect every class to infuse talent at that position into the pipeline, as many do not pan out. It remains to be seen whether any of Marrone's will pan out. Loeb looks like a career backup, but he was an important contributor as the holder on special teams--and for that reason alone has been worth the investment even if he never sees the field. It remains to be seen whether Kinder ends up garnering some playing time. Next class brought Hunt / Broyld, but with Broyld going to Milford it spaced them out in terms of eligibility. I expect big things eventually from Hunt--and predict he'll end up being our guy. Time will tell. But I believe that having Broyld push back a year is what induced the coaching staff to not focus on QBs in the class of 2012.
Hopefully one of Hunt / Broyld end up being the playmaking QB we've been waiting for since McNabb's graduation. It's been a long wait. And if Broyld isn't a QB, well at least he's a good athlete and has the size / potential to maybe be a contributor at other positions.
I also agree 100% with your point about the interior of the DL. Although we need that group to perform better in 2012, I expect that they will. We return both starters and both reserves [Crume and Boatman], and I'd expect Crume to play a bigger role in 2012. Ryan Sloan [big kid] redshirted, and him joining the core group of four guys who played last year will probably give the coaching staff the luxury of redshirting incoming frosh Brantley / Coleman. We're trending in the right direction at DT.
Similarly, I'm pleased that we were able to redshirt four OL prospects last year [Foy, Robinson, Curtis, Trudo]. We bring in four more OL this class [Emerich, Knapp, Barrett, Palmer] that will hopefully likewise be able to redshirt--which I strongly believe is an important key for the developmental curve for offensive linemen. We aren't anywhere close to where we need to be at OL, but getting into the cycle of being able to redshirt the majority of incoming players at that position will eventually pay off.