So since Buxton and Sano probably leave if they turn out to be studs, them basically missing all of this year just means the Twins get an extra year of their "peak" years
The problem with Mauer trying to pull more is if you throw him anything offspeed low it's almost a guaranteed ground ball to second base. He had a BABIP of .383 last year so I think him being "robbed" more is just regression to the mean.
I played with Hauser in the NWL and he started then, he was solid then but his velo went up and he really blossomed when he moved to the pen, he was doing well last year and then got hurt I believe.
I remember when they tried this a few years ago and all the college relievers either sucked or blew out there arms, cant remember what year exactly, it was Tootle, etc...