This may or may not be important, but I remember there being an error screen when one of my Wii U discs (
this one, to be exact) got dirty, that may have revealed important information.
Call me a crazy conspiracist, but could a 3DS equivalent of that be the ID Nintendo tracks their new bans by?
(Edit: and before anyone asks, those 1337s were edited in for privacy reasons, and aren't actually part of the image.)
Also:
This sounds pretty good, but NTR can't run at the same time as applets like Miiverse and NNID Settings can, right?
(on O3DS at least)
So unless it works with you for the rest of the 3DS session, this may not work. Try whatever you want, though, as results are results.