Selection sets in Creo illustrate

Why are the selection sets restricted to a Figure... Why are they not like groups in Creoview that way I can use them in any figure.

I know i can copy them but then i have to manage the copy all indivudually based on figure. 

I wanna organize things by Primary Structure. fluids electrical. ect...

Why do you make it so difficult?  Do you even try to use  your own program to detect these frustrations?

Or add an option to make it a universal group or figure based only for organizational purposes.