Aaron Gleeman discusses the Twins lack of power over the years. One of the reasons:

The organizational hitting philosophies seem to stress things like making contact and hitting to the opposite field, and in some instances appear to actually discourage players (David Ortiz, Michael Restovich) from trying to hit for power. Ortiz’s situation is the example that is brought up the most. He was asked to alter his natural approach at the plate while with the Twins and once he got to Boston, where he was able to let loose and try to become a full-blown slugger, that’s exactly what he did.

Every hitter has different strengths and weaknesses. It strikes me that good coaches figure these out and find ways to encourage the strengths while hiding the weaknesses. Forcing batters to conform to a team philosophy of hitting seems a good way of wasting talent.
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