I've had three of mine on the sideline watching their sister play until it was their time.
It was a great family experience as well. And although my one was asked to even warm up with her sister's team, I declined because it was her sister's team and there was no reason for it. She wasnt going to fall behind by sittting out and waiting until she was old enough to tryout which she did two years later
Years later and now plays in high school. So jealousy? Not at all. I've been around sports my whole life, way before the big youth madness. Do you really believe kids wouldnt choose to play with their own age and friends unless their parents were whispering in their ears that theyre too good and need to play with the older girls? Just my opinion which is what i thought these boards were for.