Too start this of I have to say, my shade is not a caster and I am pretty sure Funcom agree in that.
So when changing the shade nemesis nano, some thinking outside of the box is needed.
My idea:
How about instead of making this a debuff you cast on a target, this is a nano you cast on yourself to help in given situations?
Nano Crystal (Defeat Righteousness)
With this Nano Formula, the Shade breaks the rules ICC have given for Nanobot use on Rubi-Ka transferring the debuffs running in the shades NCU to the current fighting target.
WARNING: This act is strictly forbidden and not socially acceptable making you not able to do this more than once every 2 minutes.
All in all I think this will make shades interesting to fight against as you don't know if he has the nano ready and when he will use it to get rid of the debuffs, keeping the ones fighting the shade on the toes.