Traffic:
So after the 747 load of tourists exit the terminal, where do they go?
Stuff the tourists! Missed the point completely this is about business travellers.
An internationally connected Toowoomba means that businesses that require access to an international airport can get the hell out of Brisbane and locate to where its cheaper to operate and where their employees can get a cheaper and better lifestyle for themselves and their families.
This was the whole point of my rants when joining Pprune way back when. International connections are vital to attracting business investment - which is why the Qantas Sydeny - centric model has been a disaster for the other Australian States.
Go the Toowoomba!