A much better solution, as I have said in other threads, is to bring back a real emphasis on artistic maturity. Children can learn jumps and spins and have great flexibility, but only years of study and training can help them attain artistic maturity -- and some never get there. Make it a key component of the scoring system, then young skaters would rarely make into the top tier of national competitions, never mind being very competitive at the international level.
Except "artistic maturity" is also a subjective quality. And some skaters do get further at 13-15 than others do at 18-20.
So even if the rules emphasize power, edge quality, choreography, musical interpretation, and general "maturity" more and flexibility and jump difficulty less, there will still be times when younger skaters will deserve to place ahead of older ones.

