Here don't matter what enemy/environment does. Most class have no way react to dmg besides dodge.Dodge or eat dirt.If dmg lowered that situations bring. Cause no skills to counter each situation on case basis=jump rope. I brought up XI not cause all class had em, but "some had em beside the tank".If mnster AoE fire. What has more multi engagement?
1.Dodge
2.Tank cast AoE dmg reducing skill to counter specific enemy AoE & ppl dodge
3.Tank & mage cast dmg reducing skill to counter specific enemy AoE & ppl dodge
4.All have small dmg reduction to counter enemy AoE,ppl dodge

People know what used in these dungeons.It lacked variety in XI at times due to the enemy tact were 1 dimensional.Developer choice, a choice they could change. Here is small repeating rotation in player skills,enemy tact,environment situations.