Except when we traded Scott Feldman and Matt Garza last year? Arrieta and Grimm are not exactly what's being referred to by "MLB-ready starter" in these discussions. Assuming either of them can actually be starters. The silliness of this statement aside(they've traded for 4 MLB ready starters in 2 years), they've pretty clearly prioritized getting players near the MLB level in trades. For a player with Castillo's trade value, claiming they'll get "A ball pitcher(s)" for him is more ludicrous than trying to spin semantical circles around "MLB ready starter". And I think it has been a mistake to place "near MLB ready" on the priority list when you have such a drawn out schedule for contending. Maybe they didn't think it would take this long, but my guess is they would have put more emphasis on ability and ceiling than MLB readiness if they realized we'd still be where we are going into 2014.