At the official mythbusters forum at the Discovery Channel, etc - they will not allow any discussions to be made there, concerning the 9-11 myth. They say as if it is purely on emotional terms, they will not engage in this subject. That means, no scenarios will be entertained or talked about - that even remotely resembles what happened on 9-11. (meaning they will censor everything concerning this subject).
What Mythbusters could have done...
Is to do scale tests about whether a skyscraper structure - could come down, due to fire by jetfuel or not?
The big question is always - did the molten steel weaken by the jet fuel fire or not? enough to cause collapse... And would such a collapse happen as per 9-11? (Which looked exactly as a controlled demolition - fast rate of fall, collapsing within it's own footprint, with a billowing dust cloud afterwards).
And there is the matter of the Pentagon strike. What really happned there? Did a wide-bodied airliner crash there? or something much smaller?