Tyler actually did get the chance of being the Flying Type Gym Leader, but he turned it down, because there's already a Flying Gym in Johto, and he wants to become a Champion instead. Though if Falkner steps down, Tyler would probably keep the same puzzle Falkner has because laziness, but if the trainers decide to wuss out and escape the gym trainers, he'll blast on some giant fans to try to push them into the trainers as a big middle finger XD. Its possible to push through the air, but its his punishment for trying to take the easy way out