I think Technosavant has the right idea; let's prevent as many of these potential problem entries as possible and use such "dynamic entry" tactics only when absolutely needed to preserve the life of a crime victim, not just as a way to keep some dealer from flushing his inventory.
(apologies if i misinterpret your intent TS)
Nope, you nailed it.
IMO, this is one of those things where society would be better served by attention paid to the source of the problem (incorrect info, going to the wrong home, overuse of the tactic in general) than by looking at how people react when it happens. Sure, it's good to make sure the homeowner isn't hit with criminal charges for reaction in good faith to what appears to be a criminal home invasion, but it is far better to keep such situations to the absolute bare minimum.