It would be pretty neat if NINTEN Mew was generated with this method.
On a separately note, we've been aware of code in the disassembly that shows they had gifted these mons, and we've added the mons from the unused sub here.
Tho I guess the reason why OT/TID is different, is because the subroutine that people found only gifts you a mon, and it's based on the OT/TID of your save.
(However, it appears for debug game, the OT is locked to NINTEN, if you properly entered the game via debug menu)
I'll probably add these mons later.