Has anybody done a serious estimate of what it would cost to fix WTC 7? Compared it to what it would cost to demolish and rebuild? My cousin is an architect, and she told me that it wouldn't take much deviance from code before a building is condemned. (Well, something like that. It's been a while.)
While it just might be a reason to demolish the building it would not be a reason to do it secretively. Since insurance will be paying out either way they would opt for the lesser expense and therefore keeping it quiet from the insurance co. is not a valid arguement.
We need only look at Banker's Trust which is being demolished due to impact damage it took on that day. It took time to assess it to see if it could be repaired. It couldn't. It was shored up sufficiently to allow demolition. It was far from the only structure that still stood at the end of the day which needed to be brought down, none of which were brought down by blowing them up, including the other WTC structures.
A senario as you write it would require that this building be first determined as unrepairable, then a plan developed for in place demolition as it burned, then that plan would have to be put into action and carried out. All of this would have to be done in 7 hours, in the chaos of the situation in NYC during that time, in absolute secret, in a fashion never even considered for any building demolition anywhere in the world ever before.
While impossibly complicated conspiracies might work in the movies then rarely, if ever, do in real life.
Of course, for entertainment purposes, one can construct any number of implausible theories. E.g.: the NWO realized that they had stocked too much thermite, and wanted to get rid of the extra. For one thing, the next false flag will involve bioterror, anyway. What's a vast, monolithic conspiratorial organization to do when their quartermasters screw up and order too much thermite? It's not like you can eat it. You can't even brush your teeth with it.
No, you can simply take it to a weapons range and burn it off in secret rather than do it in an area being watched by every news organization in the world.
That senario is an extrapolation from the idea that in order to destroy sensitive docuements or equipment the best way to do so is to destroy the building they are in. In fact the best way to destroy sensitive docs is to cross shred them, remove the remains to an isloated area and burn them. Similarly better ways to destroy equipment is also available.