And the thread you linked from the service board is not the board's rules its just guidelines for those who want to join, create and manage a campaign.
So you mean to say guidelines cannot be accepted as a rule to operate on a board? Then why do the moderators follow those guidelines but are helpless to counter them now? Those are just excuses for me as rules/guidelines need to be addressed after 5 years depending on the situation. The situation now calls for a guideline for BM!
Asking for honest feedback if you have worked with someone is fine
What do you mean by honest feedback? Do you think a signature campaign member would be able to give negative feedback? As he/She knows that a few BM are operating around here why take a risk and question them? They will always give you good feedback and some might give you good trust feedback to get noticed.
We need rules and we need those rules to be hard for BM.