Oof... I got quite a few...
First of The Legend of Mata Nui, it had the full range of mask powers and a whole bunch of levels to play through... but got cancelled.
The movies, none of them can be considered canon! They're all palefractions of the actualstory. With the exception of the fourth one, none of them actually follow the story in the comics and books and the "action" is terrible. (Zack Snyder or Micheal Bay should've directedand produced the movies... :C )
The Legend of Metru Nui (game), it would have been a serious upgrade over the cancelled LoMN and Bionicle: The Game. It would contained mallee combat (finally!) mask powers and advanced mobility. But no, they cancelled it and went FPS on Voya Nui!! D8<
The sudden, abrupt and inconclusive ending of Bionicle, I don't mind something ending, after all, all good things will eventually end. But give it the ending it deserves!! It was a decade of epicness and should go out with a bang that leaves everybody numb-struck and wanting to do it all over again from the beginning....... not this.... whimper....
I'm.... honestly kinda happy that game got cancelled. I mean, sure, back in the day, I was kind of upset, but hey, we still had the Mata Nui Online Game. Looking at the Onua stage that someone managed to piece together and upload new footage of to youtube, I'm not sure we were missing much. The music is underwhelming, the environments range from decent to downright hard to look at, and the controls looks as sluggish and clunky as can be. Anything that was wrong with the 2003 console release was wrong with this, maybe even moreso. I don't want a game just because it has the Bionicle name attached to it if it's ultimately a poorly put together game by technical standards.
As for the movies... I admit, most of them aren't that great. However, I do think Legends of Metru Nui is a legitimately good film. Not just a good kid's flick or toy commercial, but a truly good... film, in general. Not great, but competent. "Not enough action" isn't really an issue for me because, well, I just love the story. I didn't care for it much back in the day, but when I watch it now, as an adult, I have so much more respect for it. I mean... it's about a culture dying. Not actual LIVES being lost, but something almost as tragic. This thriving civilization crumbling away, its people losing their livelihood, forgetting their values and regressing to a tribal state, the heroes giving up their youth and powers just to wake them up and preserve whatever shred of their culture they can, 'cause they're just that committed to saving anyone they can as their world falls apart around them. That's a REALLY good story, and for the most part, it plays out really well.
The Bionicle reference in The Lego Movie. It felt like a middle finger to anyone who liked it.
I completely disagree. I knew before hand what the scene would be. I went into the movie expecting to hate that scene, and came out of it loving not only the whole movie but that scene as well. They handled it very well, especally considering the twist. I feel that if they did it any other way, it'd be shoe-horned and I'd be unhappy. They said they didn't need to mention it because it would have taken waaaay too long, and wouldn't have fit within the context of the film. I went in to see The Lego Movie, not The Lego Movie plus 5 or so minutes slowed down to explain Bionicle to the character who wasn't listening to begin with.
As far as person disappointments go, I don't have many. Some of mine would however include the final fight between Tuma and Mata Nui in TLR, TLR's over all feel, the fact that they declined an offer from Nathan Furst to make the music for TLR, and the Rahaga sets.
I have many nitpicks, but that's a given.
As I said in a previous post, it's not that Bionicle wasn't done enough justice or talked about enough. It's that it was put in the "unmentionables" category, which I can't help think was put together to appease AFOLs who don't like any of those later themes shown, including the girly themes (and, if I remember correctly, duplo). To be honest, if they'd said something like... "Other themes that don't need mentioning"... yeah, it sounds nitpicky, but just that would be so much less demeaning. And to be honest, as I walked out of the theater, I'd convinced myself that that was what Wildstyle had said! Just changing that one little thing would actually ELEVATE Bionicle because it implies, "People already know this so well, that we don't need to delve into it." As it stands, it sounds like "Bionicle isn't important, so forget about it."
But hey, that's just me. I admit I'm being quite nitpicky, too, now.