The goal should be to delete those coins from the system completely, and kick them back into the mining queue to be re-created into the network. Absurd, I know, but I can't think of anyone who would be unhappy with the outcome of this idea.
Have you read this thread? Have you read my responses to this thread? Read my signature. Now, can you think of someone, anyone, that would be very unhappy if even one single coin was blacklisted?