Yeah unless you are getting a clear upgrade in the OF with many years of control left, might as well stick with Hernandez and hope that his post June/post ASB numbers suggest some time of breakout is possible.
With the extra roster spot I fully expect all of Hernandez, Fisher, and Alford to be on the roster when the season begins. I doubt we will see a OF signing. The real position player upgrade will come at 1B, whichever direction they decide to go there (Yoshi, Shaw, whoever).