I don't get why challenging me on the Navarro question has become a "thing" for you in particular Yaz. What I'm proposing is really not that absurd, and Navarro's ability to play ball in the big leagues is being way underrated here.
In terms of readiness, he'd be a little raw and rushed if he was called up now, but he has enough talent that he could pull through a rough inifial couple months and settle in. Jumping pretty much straight from AA to the majors would be rocky for him, but it really depends on the level of expectations. If they're reasonable for a rookie who's learning on the job (replacement level or better), he can probably meet them. If they're the standards of a major contender looking for real run production from the shortstop position, the only guy we have who has a real chance to meet that standard is Jed Lowrie (Scutaro is more a really, really good utility man on a championship team or a starter on an average to above average one).
Little doubt he'd benefit from some extra time in the minors, if he debuted now his frist year wouldn't reflect his ultimate talent level, but this kid isn't a bit prospect either. He's quite underrated and shows potential in at least 4 of the 5 tools (power is a work in progress, but he's a good gap hitter). Navarro's worst sin is to be behind two guys in Iglesias and Lowrie who are far more immediate, that doesn't, or at least shouldn't, take away from our impressions of his own talent, which is non-trivial.
A number of teams if they had a Navarro would debut him by midseason next year for the glove and hope the bat caught up, a lot of good shortstops began their careers that way. So if you wanted to demand that I commit to the idea that Navarro could be a starter, I'll go ahead and say it: On a small market, one that's bringing a youth movement forward and trying guys out to see whether they can get the job done, Navarro could absolutely be a starter. He could start on a bigger market that had a hole at his position as well. Just his bad luck, he's coming up in our deepest field position at the high minors level so he probably won't get much of a look this year. That has nothing to do with what he's capable of, just what opportunities he's likely to recieve.