Luciano's situation is much different. He'll certainly be back in the minors next season or this year if the Jays return him, and he is never being put in to high leverage spots. The Rockies had a chance to develop Castro from the ground up after they acquired him but decided to keep going with him as a reliever in AAA. It's a long shot anyway but at least the Jays are attempting to develop Luciano instead of throwing him into to the fire.