Rewatching this, and the only genuine flaw I see...
Was the voices for the matoran being a little too "tennybopper-y"
Considering the movie script and scenery and such went to great strides to pay tribute to various elements of the past BIONICLE story-line, I think making the matoran sounds like kids struck a wrong cord.
Not entirely, though. I like Takua's voice, and think it suits him. But Jaller, the best warrior and tactician of Ta-koro - the greatest warrior bar the Toa - sounding like he just hit puberty? It just didn't feel right to me.
That and Lewa sounding like a camp leprechaun.
Other than that, I'm enjoying the re-watch way too much.
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It's me....Bara...it's always bloody Bara