Seriously, though, this feels like it was pulled right out of the 2001 story. Every character is impeccably on-point, and the story was expertly plotted, paced, and animated. Nothing felt overly out-of-place to me (save perhaps Gali being a jokester, but as that's a G2 reference, I'll let it slide ). I loved a lot of the little details you added into the animation (i.e. Tahu's various annoyed expressions, the sequence where he impersonates the other Toa, and the various Ta-Matoran giving him blank stares). Things I particularly liked were:
The characterization--each character felt unique and true to their G1 forms, and I really liked how you showed Jaller's wisdom (particularly when he was discussing Onepu)
The writing--you made the dialogue sound appropriately mystical and "BIONICLE-y" without becoming overly eloquent, which perfectly complimented the story.
"Pohatu...is fine"--I LOLed at this, hard. Along with a few other parts, like Tahu's flaming sweat drop and his impersonation of Kopaka.
The nostalgia--Particularly when Tahu was finally coming around and recognizing the good aspects of the other Toa. When he said that he might have been too hard on them, I felt a wave of nostalgia, because it brought to mind the later years of G1, when the Nuva had finally united as a team. Thinking of how close they were at the end of G1 and then watching this, I truly remembered why G1 was so great--because the characters became stronger over time, rather than simply staying the same. Watching this early, rather annoying version of Tahu is even cooler when you know that he will eventually become a strong and wise leader.
This was really awesome! Please don't stop making them, because I will watch every one you create!