It appears in either case we have several prospects with good hit tools. Similar to Keaschall though we may have to many with questionable defense. Now they initial tried Mendez at 1st but he ended right back in the outfield this year. We have a bit of a glut with Gonzalez, Rodriguez, Jenkins, Mendez - Then add in Roden and Buxton.
Mendez is on the 40 man and his approach appears to be MLB level. I would be ok with giving him a shot at the big leagues but my guess is Wallner, Rodriguez or Gonzalez would be the 1st options.