Probably not a popular opinion but I think it would be cool to see Drained multiply the effectiveness of other Blind effects, because that seems to be what it actually does when considering invisibility.
From testing out Vanishing we found that Drained actually has a huge effect on visibility while ur semi-transparent.
I have a side-by-side comparison but I cannot show (for obvious reasons). Just know that the difference is practically night-and-day.