Add rage mechanic

[CKNovel]

There is a difference
All you mentioned is scripted with no intelligence from boss side

Just make boss smarter and can act at his own with rage mechanic

I strongly suggest you try to play tank role in high-end content and then come back to us.

XIV is a game about planning, mapping your resources and predicting the mechanics. Not about throwing random surprises that can happen in 1 run out of 1000.
If you play only dungeons and normal mode, your knowledge of the game is limited to the surface level.

We already have bosses targeting other party member and that's enough.
You can still queue in Rathalos Extreme to try your suggestion.