You only need 4 similar level teams to put together a bracket that gives teams 3 good games. To have teams play against kids who a year and/or two years older is just not acceptable. They worry about the stupid waver forms, and then have 10 year olds play 12 year olds which is an injury waiting to happen.
I agree. We were rising six graders playing rising 8th graders. When every kid on one team is almost a full head taller than the other team it should be a signal that the matchup is off.