[Duugu]

I'm not that motivated to dig into the code of ouF_Skaarj to be honest. But this you be a quick and dirty solution.

Try to replace

local customFilter = function(icons, unit, icon, name, rank, texture, count, dtype, duration, timeLeft, caster)
    if((icons.onlyShowPlayer and icon.isPlayer) or (not icons.onlyShowPlayer and name)) then
        return true
    end
end

in aura.lua with

local customFilter = function(icons, unit, icon, name, rank, texture, count, dtype, duration, timeLeft, caster)
    if(((icons.onlyShowPlayer or IsShiftKeyDown()) and icon.isPlayer) or (not icons.onlyShowPlayer and name)) then
        return true
    end
end

Didn't test this though.