Having the Jr level age grid spanning over ages 5-16 in levels 1-3 would allow small gyms to create teams for almost everyone that walks through their door. It used to be having a hand full of higher level athletes on lower level teams really had an impact on competition and so people would get upset about crossover rules, but IMO the Summit has changed that. Competitive Summit teams aren't putting athletes with head grazing bhs's on their level 2 teams like they did pre-Summit years. The kids with a flyspring, valdez bhs, triple running bhs, bwo bhs, cartwheel bhs, incredible body positions, good jumps and solid stunting abilities are the ones making level 2 and winning the Summit. So now, if a small gym chooses to build a level 2 team with a good percentage of level 3 and 4 athletes, IMO the amount of multi level crossovers doesn't have the same competitive impact it had 4-5 years ago. Both Summit and D2 only allow athletes to crossover to two teams now, so I'm just not seeing the benefit for the separation of the two anymore.