I wanted to make a point about the aforementioned Confuse from delirium.
It is nice for certain characters, but as it causes ranged attackers to scatter and reposition in order to attack each other, it can be very chaotic.
For a fireball sorc, for example, you would rather your targets stay bunched up together doing nothing, instead of arbitrarily dispersed all over the place.
So Gloom is ideal in her scenario.
Here are some examples of it's effectiveness on my zealer's merc.
While those flayers are relatively harmless regardless, I thought this was a perfect example of how effective gloom can be.

