Just how many spectators do those venues seat? It's not only about mat surface it's also about seating. Do we really want to hold a state tournament where mom and dad might not be able to see their kid wrestle? Intrust could possibly handle the seating and mats but I would hate to hear all the complaints on here about the parking afterwards. For those that don't know, you would have to be trolleyed to the arena from parking areas throughout the city.
The other two facilities mentioned don't come close to having enough seating.