What are some the most BS mechanics in the game?

[Raikai]

That is only because the majority of people don't understand how to see the visual cue to resolve the mechanics.

Puppets bunker 3rd boss, look at the screens. Any white markers on it, need that many more people.
Alexander AOE marker with silver balls floating above it, that's the number.
I know there are more than just those two, but they are the ones that I see most during roulettes.

So simple, yet so hard for people to understand.

TBH I was thinking more on an EX/Savage perspective... It's just an annoyance to prog through.

Actually, I don't hate the mechanic per se, but I do hate the fact that nowadays almost every high end encounter has it. Let this be more of a rare occurrence.

Thinking about high end mechanics on a second thought, I also wish they would give 'Limit Cut' some vacations through Dawntrail.