I think the problem is, short skirts plus transparant materials plus action equals areas they don’t want to go in a childrens show. They need to grow a backbone as the older cartoons from 60s and 70s had plenty of innocent or non innocent panty shots.
Shimmy: looks back at me and adorably winks You know it, sweetie! giggles
and that’s why Equestria Girls is not even target at little children