I mean, I'm on that list @Deathwing, and I'm certainly not posting just to hit my campaign target. I post a lot on the forums when I actively use it regardless - generally in the range of 5 to 15 posts a day.
Its a tool which should be used in conjunction with other factors. Its an aid, and not a be, and end all solution. The tools exist, but only a few managers are utilizing them effectively.
I would agree though that most likely most of the people on that list are just posting to hit requirements. Personally I think we are far too lax on what constitutes a low-quality post. People know the requirements now and write just enough to allow themselves to evade bans and exclusions from campaigns. I believe you or someone else called these "borderline cases" and it's a very apt term.
I don't know about the community consensus, but the way I look at it is the signature campaign process shouldn't be a guaranteed payout every week. What I mean by that is participants should be under constant review, and these borderline cases are the ones that should be considered for removal for
better users. Thus, the signature campaign would always be evolving to include the best of the best posters that have applied, and possibly keep certain users in a
queue so that once you have determined these borderline cases these users in the queue could be sent a message to see if they would be interested in joining the campaign still, and then removing these borderline cases. Note, that these users wouldn't be banned from the campaign per say, but removed for a better poster at that time. They could apply again after a certain period of time has passed which would be determined by the manager. This would hopefully encourage users to always be thinking, and posting substantial posts rather than getting into a campaign, and then letting their posting habits drop once they're receiving their weekly payments.
Signature campaigns should not be black, and white; so just because a user is deemed borderline doesn't mean you shouldn't be looking to improve the quality of users, and therefore promoting more effective advertising by replacing them with better posters at the time.
To tie this in a little bit more to the OP - I think the best way to satisfy everyone re: reporting to managers is by making it mandatory for all signature campaigns to include a link to the campaign manager's profile in their signature BBCode.
I think we are far more likely to see signature campaigns completely banned outright rather than placing restrictions that signature campaigns have to abide by to operate on Bitcointalk.