While that is a constant irritant to me, I'm more concerned with what in the heck they actually did. I mean, what purpose did these 'nanotech' Matoran do exactly? Making masks? Building chutes, carving statues--what did any of this do for Mata-Nui? What purpose did Rahi serve in the grand scheme?
I mean the only thing that makes it at all logical to me is that they were meant to be planetary colonizers. Eventually the unit would land and dispatch the Rahi and Matoran and blah and they would start creating a habitable environment for those of Spherus Magna/Bara Magna. KIND OF LIKE THE STORY I WROTE A BAZILLION YEARS AGO /plug
But...uh, yeah.
-Janus