I would say quantifying "value" is a nearly impossible thing to from the outside looking in, and inherently subjective and arbitrary. It could also be easily over-inflated if one were to have a confirmation bias against Henry. Henry has had enough mishaps to focus on, mainly his free agent aquisitions and contracts doled out, his inability to draft and develop positional players, etc. His ability to get the most out of farm system in trades wouldn't be one of them.