I am a member on many other popular online forums and I have seen that all of them have a dedicated page listing all the staff members on that forum. The purpose of this can be if a member is having some issue using the forum, he can go to that list and see which staff if online ( if they are showing that in their profile) and then contact him.
The downside to this feature is that staff can be spammed with lot of messages. This can be handled by allowing only certain rank and above to be able to have access to that page or the option to message mods.
Do you find such a feature useful for bitcointalk also?
Yes, it's very necessary and bitcointalk also have the same feature. In every forum in bitcointalk there is administrator and moderator that is in charge of the process and moderate every activities in the forum and those moderators review every post in the forum and the post is not in line with the requirements of the forum it will automatically be deleted and if any member go against the rules of the forum such member account may be negative tag or ban if necessary.