A practical benefit of re-classing really presented itself to my son and me on a recent weekend. He attended his first "big" showcase (he is a 2020). In his group was a kid who I figured was roughly similar. They were the biggest ones in the group, my kid a bit bigger. I noticed from the roster that they were born in the same month. My son was a good bit faster and hit well, but the other kid squared up more balls and had a more polished swing. My son looked better in the field. They both made the all prospect list.
A week or so later I checked the PBR Rankings for our state. My son is 50+.... not bad, but not earth shattering. I looked for the other kid but didn't find him. Then it hit me...I checked the 2021 list and the kid is right toward the very top in the state. As a 16 year old freshman I guess he re-classed somewhere along the way.
To be honest had I previously known how prevalent and accepted the practice is I would have suggested to my wife that we strongly consider it.