A community-wide vote of members with over 20 feedback (people active in the community), greater than 100 days on the forum and a certain postcount, or even a moderator vote with veto abilities from administrators/developers would be an interesting idea. The privileges should definitely only last for a month (until the next person is instated), and it could even be a sort of "introductory position" to moderator, like CBA used to be.
Definitely a lot of support for this idea.
I don't think the idea is necessary contingent on that, but it definitely would be a great idea, at least for the sake of having the community decide who they deem fit to have those privileges, or who the moderators think might make a good fit for moderator.