One thing I've been thinking about recently is that a lot of the more (for lack of a better phrase) advanced statistics are... basically documenting the things that scouting has been highlighting for years. How hard a batter hits a ball, how often he hits it hard -- how effective a specific pitch is from a pitcher, how effective it is in certain counts/scenarios, how effective it is against different types of hitters, etc. The takeaway for me at this point is that, no matter how advanced any statistics are or become, the real 'secret sauce' of player analysis is in their physical actions. I would guess that, if it isn't here already, some form of digital analytics based on video of players' physical deliveries/swings/etc. will be the new way forward. As far as we fans are aware now, the best organizations are using statistics to support scouting -- anyone focusing on just one or the other is surely losing the future. I think virtual reality/augmented reality will become huge in sports, and baseball especially is ripe for adoption. Instead of just watching video, now teams can create models for opposing pitchers/hitters based on real-life tendencies & data. And players can train against these very real digital models of their opponents. Imagine being a player, & instead of walking into your normal batting cage, you strap on a VR/AR headset. Now you're facing the upcoming opposing starting pitcher for tomorrow's game, and working against his real pitches, delivery, & tendencies. And you can create any scenario imaginable. MLB clubs have been monitoring pitches in a 3D sense (PitchFX) for years now... I'd bet the leading clubs are either looking into how to adopt VR/AR, or they've already adopted it.