Well, perhaps for new appointees, the staff should post a general thread for people to voice their opinions on the appointment.
"The LucasForums staff is considering ForumMember217 for the position of moderator in 'Forum ID 217.' If anyone has any comments, opinions, or disagreements with this appointment, please feel free to post them here or PM me personally. This thread will remain open for seven days, then which ForumMember217 will be automatically promoted unless the staff receives due cause to re-evaluate their decision."
This guarantees that the regular members will get their word in, anonymously or otherwise, but the ultimate choice would be left to the staff, as it should be.
"Kj°len is a pretty cool guy. 'e doesn't afraid of anything and 'e doesn't anything about anything."