In my opinion, PG's partnership with TrackMan is the latest in a fairly long list of reasons why their events are THE events to attend for elite-level players.
The fact that PG was already measuring, tracking, and reporting all kinds of things to a searchable database of players (that virtually every D1 school and every MLB team uses) already set them apart in my eyes. Now they can accurately measure all kinds of things that can only enhance player evaluation and scouting. Because they already have years of MLB data, they can report that a kid has MLB-caliber spin on a curve ball, or batted ball exit speed, or any number of things that used to be "measured" by scouts subjectively. Now, as they gain data with HS age players and follow them into the pros, they'll get some really interesting data on player development at the elite level that should really improve scouts' ability to "project" kids down the road.
Very exciting, to me.
[Edit: Was writing as PGStaff was posting. What he said. ]