WowAce

What is the enhancement in mind? How should it look and feel?

The option to tweak the Alpha and depth/strata of the Aura Highlight module.
At the moment when you highlight something it appears above everything: name / buffs / bar etc ... which kills a bit the purpose of highlighting something to me. You have 1 information more visible but at the cost of all the others being washed below the highlight. Being able to put the aura above the background, but below the Texts / buffs icons / bar for instance would be a great thing for visibility.
I was able to modify the alpha directly inside the lua files but its a bit lame to have to compromise between an aura not visible enough / or lose the info behind it.

Please provide any additional information below.

In the menu "Layout editor > Other > Highlight", and in each "Layout editor > Aura > Highlight" you setup, add some rollover menu with depth position for the highlight, or a Drag cursor from 0 to 30 that could move it from top to bottom of a unit frame
The aura Highlight is the most important one definitely.

Thanks in advance for your feedback