It was raised before though.
In the WFTF the top age is 18. I can't remember what it is at the Euro's... think it should be 16, but it's a tricky one. Either way though, i'd like to see more juniors doing it, so anything that encourages them is top in my book. If for any reason than it just makes me laugh when juniors hand an adult their own backsides...
They are probably the ones who grab most reward out of a trophy or medal. It's doesn't need to be much, but i bet it would mean the world to most. You could do 1st - 5th with certificates for scores as well. I wonder how many have bits of paper or trinkets from their distant childhood still knocking around the place that brings back a memory.