I completely understand the frustration, especially with the Sox pro scouting department. They really don't get the benefit of the doubt (I do like what they've done with their amateur scouting however). What I find interesting about this deal is I am assuming Hahn asked Hostetler (who was promoted to that position) about Mazara. They have obviously liked the kid for a while and the potential is crazy. But... potential is just a word and alot of guys just don't hit that ceiling on what they could've/should've been.
Now personally, I make a move like this last season to see what you have in him as you were not looking to compete and can evaluate a guy longer. Mazara has not been great to start his career but he isn't terrible either. Said it on this thread he has some interesting numbers that I feel can translate in our park dimensions better (namely the gap power) as well as things I hope Menechino see and works with him to get the best out of him (launch angle, barrel %, etc.). It's an interesting gamble for a 24 year old who definitely can "figure it out" and does have an arm out there to keep runners honest.
Now what I also find interesting is the new rule change and I thank god they changed the 3 batter rule because it's going to stop a terrible manager (Renteria) from micromanaging matchups. You put Mazara in between 2 right handed hitters and... look at that... he's going to be facing more RHP in later innings. In essence, it also helps guys who are stronger on one side of the plate over the other. Now does this mean that I love the risk/move? No... but I am definitely willing to see how it plays out.