Thought this was interesting: www.fangraphs.com/blogs/the-ch...-a-modern-day-scout/
Among other things, the writer argues that in the modern MLB game, more strikeouts, more home runs, and more hitters trying to lift the ball has a knock-on effect: individual defensive value of infielders has less value.
"The importance of defensive ability has been reduced. That’s probably irreversible, and that reduces the overall prospect spread. It’s also now harder than ever to tell who might hit for enough power in the majors to survive. That further reduces the overall prospect spread."