I'm not going to argue with tw point by point.
But here's the kind of thing that's next if routine, unwarranted surveillance in other-than-visible parts of the EM spectrum are upheld:
http://www.millivision.com/partners.html
The courts have held that if the cops can see in your window from the street, what they see is admissable without a warrant. But if they have to use binoculars or a telescope to do so, it's not admissable. Use of IR imaging is no different than use of a telescope in that respect, IMO.