Aw, man, that was a great read. I would never have thought to actually incorporate Boneheads of Voodoo Island concept art into one of Mata Nui's vists -- but now that you've done it, it seems so utterly obvious.
Big congratulations for thinking outside the box like that. You also did a good job of sharing just enough info that we got an idea of the alien culture, but little enough that they still had some mystery to them. And your musings on space-travelers in the Before-Time just makes me more and more curious about the wider world of BIONICLE -- the cosmos outside Spherus Magna. But I suppose we'll never know for certain what was going on there.
One thing, though. While discussing the Toa Mata's canisters, you wrote "the Toa Mata Nui been placed in canisters", which I assume was not your intention, since it makes pretty much no grammatical sense. I understood the spirit of the words, though.