Lemme pull out my list... ahem
The mahiki stone's random inclusion in the story. I'm almost confident the cancelled video game would've covered the stones, but we never got it
The scrapped 3 finger island. So much better of an idea to trigger the bohrok than makuta directly waking em up after his fight
The bahrag's appearence having absolutely no relation to the Bohrok
Lack of an actual MNOG this year
The uselessnes of the Exo-Toa, would've preferred the queens to be defeated with the suits tbh
Cop out ending to first arc with the vahi
Animations for the Kal were VERY rushed in pacing.
Nuva symbols are random
Kohlii match between taka and makuta, just stupid in general
Not much from this year honestly, I never really understood ahkmou's motivation for being annoying
Had no one heard of this mystical keytongu living on Metru Nui back when it was populated?
Vakamas dumb teenage angst
Piraka should've been given more personality, too many of them were just "grrr I have a temper" zahktan was an exception
Weird inika masks
I honestly still don't understand Brutaka's side change, what caused this? Maybe I just missed something
Mask trolling everyone for no reason by plunging underwater
Why didn't axonn follow the team underwater? Could've really used his help
Matoro's weird dark phase, I get it was setting up his death but it came out of nowhere
The ENTIRE point of Voya Nui falling back into place. How did the people on the island not drown? Did the island go underwater? Wouldn't drowning an island ruin a lot of homes, wildlife, etc? Also are we to assume there was a hole in the ceiling of Karda Nui the size of Voya? If so, Karda Nui should def be completely submerged in water.
Av Matoran were unneeded. I much preferred Takua being worthy of becoming the Toa of light, instead of the coincidence that he's simply that type of matoran.
Pohatu's color change, plus how stupid the concept of flying around like a helicopter is.
It was never really explained why the keystones were scattered, they were simply a plot point for more collecting for the Toa to do.
Almost everything about Bitil and his powers. Dear god I'm not gonna get into it but it causes SO many plot holes.
Krika should've grown a backbone and switched sides
Mata Nui not freaking out to get back, dude give a crap about your universe, will ya?
I can't cover it all because there's so much random stuff
Obviously the open ended and never finished stories
Red star made death pointless for anyone pre malfunction
Velika being a GB Is absolutely random and silly
Where the heck did Garduss go, did he just abandon Pohatu and Kopaka?
Phew! That's all I can think of for now, there's more serial stuff but I don't want to get into it