Thats a good point ! I would have thought that as the ticket is effectively being sold back to the club to sell again then surely the original ticket holder cannot be penalised for not being able to attend ?
Like i said before, if your child cant go to a game next season with the season ticket you bought, offer the ticket up on the clubs ticket exchange, perhaps the club need to promote this a bit more !!
If for whatever reason somebody cant go, then you should put the ticket up on the clubs ticket exchange, therefore allowing somebody to go in their place !