With both a more effective starting rotation and some flexibility in the relief corps, I believe that a 12-man staff should be the rule rather than the exception.
I think that Escobar is an ideal utility man because he plays good defense at many positions, but IMHO he's the best shortstop. If Santana lands the SS job, than Escobar and Nuñez provide a little bit of everything as reserves. I'm still believing in Parmelee, but if another outfielder is acquired, Parmelee is on his way out. Schafer will almost certainly not go through the arbitration process, so the Twins will have to do some "fancy footwork" to keep him in the fold. If Schafer is not back next year, there is room for a free agent in the outfield.
Assuming good health, here is my handicap for the marginal players on my list:
Suzuki, Mauer, Dozier, Escobar, Plouffe, Arcia--100% Santana-95%, Vargas 80%, Pinto 75%, Nuñez, 70%, Hicks 65%, Parmelee 55%, Schafer 50%. Schafer is probably the only one where a contract will be an issue.