Re: 2012 Reds shortstop Cozart and...
Kristopher Negron and Didi Gregorious are listed as shortstops on the Reds 40-man roster. Neither one of them has a a career OPS over .700 in the minors.
Chris Valaika, meanwhile, is listed as the third shortstop (behind Cozart and Janish) on the depth chart, and did play at least a few games at short in the minors last year.
If I had to bet, though, I'd say the Reds will be content with Janish as the backup. He's got more major league experience than any of the aforementioned players, and his defense is perceived as an asset. Depending on him isn't ideal, but as long as he's just a backup, I doubt it will be crippling or anything.