I can't imagine Brandon would be okay with having thousands of unsold tickets. That kind of thing can snowball - once fans see that it's not necessary to buy season tickets to get seats to every game, more could decide not to renew the next year. It's absolutely in the AD's best interests to find a way to get all the tickets sold.
People are making Brandon into some kind of diabolical villain when he's really just continued the ticket policies set in motion by his predecessors. We've progressively raised ticket prices for a generation now. We never hit the breaking point because either the team was strong or the schedule was good. Now we're hitting the perfect storm, coming off a 7-6 season and having our worst schedule in forever, and it looks like the breaking point has finally been hit.
I do think some kind of discounted packages are going to be offered this summer. They're not going to just let 10K tickets go unsold.