I understand why he would take the unknown flier route--or dumpster diving as I like to call it, but that requires too much unnecessary trial-and-error.
A bullpen needs at least 2 reliable arms and those cannot be attained from the bin alone.
I understand the purpose of Valbuena and Marte just fine. I just fail to see how that conflicts with my statement of Cron being a better hitter and a better backup 1st baseman.