SE's treatment of MCH is a joke

[Absurdity]

We had this in Heavensward and Stormblood. It was Hypercharge and it turned the rook turret autos into Trick Attack. Not sure if it was 5% though.

I can't remember the exact percentage but it was half of what Trick did at the time with double the duration.

Again, I'm not arguing that the 1% role bonus is fun or good or interesting. What I'm saying is, that if the standard is "we don't bring (role) anymore because it's suboptimal by less than 1% when compared to not bringing it at all on the raid tier with the most lenient DPS checks in the history of the game, therefore we must flatten the jobs even further", there is no winning. The problem isn't the jobs, it's that the playerbase is so fixated on the scoreboard it's the only part of the game that matters to them anymore.

And I'd argue that IS a problem with the jobs, or rather their job-design philosophy in general, because everything that wasn't just % more DPS has been systematically pruned out of the game or out of relevance. You've said it yourself, TP and MP management are either completely or close to nonexistent. Aggro management is nonexistent, buff management is just doing your opener and then pressing it on cooldown.
When the only relevant metric left in the game is "provides X amount of damage" then that's all you're going to look at.

And when they try to break that mold with the currently available options we end up with completely overtuned abilities like Shake It Off.