Low lvl dungeons on high lvl character. (scaling)

[FFgame]

If you do your 70 rotation you shouldn't exceed X damage which is the same as is roughly expected from the the damage your class would do optimally at the level dungeon is at.
I'd still rather they bring the dungeons "up" and rebalance them to max level, add some attacks to bosses and trash nothing fancy. At very least they should have done that to expansion 5 leveling dungeons.