Good post. I'll also add that Blast Motion and Rapsodo have allowed scouts to crosscheck their in-person observations with solid data. They don't have to put a 50 or 55 number on a breaking ball, they can measure how much it spins, how much it breaks and how well it gets located. They don't need to rely as much on in-game results because they have the raw performance data. The raw performance data is probably more reliable than watching a couple games here and there.