You start the free-agency (and arbitration) clock a year, or maybe two, early. While the Twins don't necessarily have to view themselves as bottom feeders, they can't waste the high-talent/low-wage years that the CBA gives them. That, at least to me, is the answer to "why not". You can make the trades you outline, but decent talent for a two-year bridge needs to be found as replacement. That's a fair argument...one could also say nitpicking a player's game to death in the minors or staling him might take away confidence. Yes, it's a balancing act. You can't (and shouldn't) let a player waste productive years in the minors just because it's not his "turn" yet - for one thing you'll find it much more difficult to sign your draftees in years to come. But, if they are not yet productive, i.e. they are brought up and allowed to "struggle", then that side of the argument starts to weigh less, and you have the converse problem of establishing a certain amount of complacency in the clubhouse because 'hey, they don't have someone they can replace me with anyway'. A GMs job is just hard. I keep coming back to that.