The difference in price between your ST and the hospitality shouldn't be higher for under-16's.
If anything, they'll eat less of the type of what's offered.
If it's a £40 uplift for me to move from my ST to hospitality, it shouldn't be £50 for a kid.
My main (not only, of course!) gripe about the hospitality setup in the price hike once your kids turn 12.
Under 16's get the cheapest season tickets in the ground, but 13 yr olds pay adult prices in hospitality, meaning the uplift in price from their normal seat is obscenely disproportionate.