Proposed solution: Each time cwho is called, add 10-20 additional alias' to the list, ranging from proper names, to abbreviated names, to uninitialized alias', to propagate a massively bigger pool on filtered lists, and to increase the total pool size on a full cwho.
Effects: Greatly confuses who may or may not be an active player. While also increasing the amount of false information the command generates. Possible that you could do this just within the printing code for the cwho, but may or may not be likely. Could generate lag, if it's gotta iterate over a large list of things. Really speaking from a development standpoint this is the lazy slow solution compared to creating a system that discourages people from suspecting alias hoppers, like my previous one. However this one changes less from the status quo. Which might be more to other peoples tastes.