We wrestle in D2 and I'm a big fan of no subs just our district championships.
My kid is in the big bell curve of kids at 10/u and I just for fun looked at subs for D3 and D4 at my son's weight class. One bracket has 2 kids and the other has 4 kids.
What's the point?
If basically everyone is qualifying for Districts in D3 and D4, then I guess I don't see the need.
I'm sure I'm missing something but it seems unnecessary.