For instance, in the heavyweight division ( 200 lbs and up ):
Junior Division: Ages 17-25
Prime Division: Ages 26-34
Senior Division: Ages 35-44
Grand Division: 45-50 ( extra rules in place for safety precautions )
Legends Division: Ages 51-55 ( extra rules in place for safety precautions, along with mandatory headgear and extra padded gloves ).
I hate to say this, but if the IBF, WBA, WBC, and the WBO got ahold of this idea, they probably would implement it, hoping for more revenue streams.