About buffing i kind of agree... However you can only use the "less time to kill boss" buff for example.

As for debuffs I disagree. You can have a normal battle, and a one with debuffs.
For all those people who can already beat the battle with eyes closed, they can add the debuffs option.
For those who are in a pug and are unsure, they can opt to have chance of debuffs at 0