Turang, Dorrian, Devanney, Alvarez, VanMeter, Michael Brosseau, and VanMeter all adorn the INF dirt. Isaac Collins was called up because he can try to play the OF grass (albeit, not all that well). There isn't any room for a guy who strictly plays 2B with a very inconsistent offensive track record at Double-A. Every one of those guys listed can play 2-3 positions. Heck, they are playing Devanney at 1B. And, with Hiura set to return shortly even he has positional versatility with a much more established track record in Triple-A. AND, for as hot as Valerio has been, he still has a sub 0.700 OPS and is still just hitting 0.252. I see his current run as a classic rebound after his extremely bad luck with BABIP last season.
Granted, obviously, if he kept up this torrid streak for another 3-4 weeks I agree with you. I guess what this says is: I don't see this streak lasting. š
Anywho, this also brings me to: I sincerely wonder how Valerio is viewed within the organization. I would love to know.