All have made great points in this discussion - but I can't help but think back to the 2008 season and the ensuing QB "battle" and the farce that it was.
I don't mean to be such a pessimist, but in light of what happened during the 2012 season, where a promising QB's junior year stats (3000 yds, 25 TDs and 7 Ints) became an atrocious 2000 yds passing, 7 TDs and 8 Ints, leads me to believe that either the "new offensive regime" is not good at developing QBs to fit "the horizontal offensive system" or, and here is the elephant in the room, the new offensive system is in the aggregate - simply crap.
Fast forward to fall 2013, and I predict another excruciatingly painful series of press conferences bemoaning that no QB has set himself apart from the others and that we will be playing multiple QBs a la 2008. Of course, we will all get a refresher course in pre-snap penalties, dropped center QB exchanges, and a myriad of other painful mistakes and confusion. Knowing all the while by the end of 2008, that only a fool would keep trying to delay Stanzi's taking the job.
The bottom line is that in light of this current regimes ability to utterly destroy JVB's senior season, what possible reason for optimism is there when you contemplate what this staff will be able to accomplish with a group of QBs with no in game experience, no starting experience, and finally no experience even practicing with the first team offense.
I would love to be optimistic about the upcoming season, but past practice by the coaching staff and current offensive (horizontal philosophies) adhered to no matter how badly the game is going, leave me with a really bad sense of doom and gloom. Nothing against the kids vying for the job, as I am sure they will all do their very best, but I fear the system is so stacked against individual success so as to make any realistic chance of a QB emerging almost nil.