I often import an entire WeakAura package but then painstakingly go through each child WeakAura and reduce alpha from 100% to 70% to better fit the visual theme for my UI.

Currently the Group tab allows setting a group scale that allows for modifying the size of the group's WeakAuras together.
I would like to see additional option to set a group's alpha/transparency, e.g., Group Alpha that goes from 0% to 100%. This alpha setting would be multiplied into each child WeakAura's alpha setting when displayed so that each child's alpha is correct relative to other children.

You can already select a group, or multiple aura's with CTRL/Shift + Click, and change all the selected auras at once.

You can already select a group, or multiple aura's with CTRL/Shift + Click, and change all the selected auras at once.

Wouldn't this destroy the relative transparency settings between the child auras of a group?