Offensive Words Filter
In a professional environment, it would not be polite to allow some kind of language specially in open channels. It would be very useful for admins to handle a small database of words not permitted in their channel and a filter that replaces the "offending words" for symbols or other words defined by them.
Agreed, this is needed.
Or... instead of passively filtering, you could approach the individual directly and explain your offense with such language.