I don't think that "designed for use within the MU" necessitates "nonfunctional outside the MU" -- we've also had an instance of extra-MU Vahi operation, and I have a memory of Greg confirming that the Legendary Kanohi functioned outside the MU, just not at their full potential power level (granted, I also have a memory of Greg saying it would be 100% physically impossible to have doubles of any Legendary Kanohi within the MU and I might be wrong about that? who knows) What I think is interesting is that most of the instances of extra-MU Legendary Mask use were very close to the MU exterior -- probably close enough to still latch onto the fundamental forces at work in the interior. Ignika on Bara Magna is a fun loophole, since it's tied to the life of Mata Nui, and surprise! guess who's inside it so: what's going to happen now that the GSR is toast and Mata Nui is dormant? I'm guessing that the power of the Legendary Kanohi might just fade away That would be a sad, almost peaceful ending...