I haven't joined for signature campaigns and for sure wouldn't leave this forum because of them. Beside this one, I am active on several other forums for ~20 years, wrote tens of thousands of free posts so I would continue to do the same, but I would probably post less, whether I want it or not.
I am aware of the fact that every forum has very active members who will write no matter what, but those are few and far between. Thing is, majority of people would have to reduce their posting frequency simply because if you remove all posts&threads made by those that are here only because of the money, there would be less posts to answer to. In order to be very active, you need other people and if you don't have that, what to do other than post less.
Let's say they stop allowing signatures, what would be the backlash of that? Well for starters, forum traffic drops by 90%. That means forum ads lose their appeal to businesses. Also leading to no income for the forum, ultimately leading to the forum closing down after a period of time. That's what I think would happen anyways. There will be a few happy members of course, but there will be no reason to keep the forum open for the 100 or so users left.
Yep, nicely summed up. As much as we all hate sig spammers, signature campaigns pros simply outweigh the cons. Theymos and other forum staff are aware of that so I am pretty certain that signature campaigns are not going anywhere, at least not in the foreseeable future.
The issue IMO is the poor quality of the posters in these campaigns. That's really on the manager. If you have a poor quality poster, then remove them and let someone worthy take their place. I have been guilty of letting douchebags in a campaign because I had a large number of open spots, so maybe I have no room to talk but I can acknowledge the problem and do my part in fixing it.
When it comes to replacing shitty posters with better ones, I don't think that you or any other manager can do much about it (unless you increase rate), because there are simply not enough quality members to fill the need of all ongoing signature campaigns, let alone new ones. So even if you want to replace shitposter, most likely you will end up getting the same thing. At the moment, every decent member that wants to be in signature campaign is already part of one (except during that short period when some good campaigns ends so they have to look for another one).
What managers could do though is for example is not set the fixed amount of posts that participants have to make or at least make low minimum requirement so people are not forced to write anything when they don't feel like/don't have time as forced posting in majority of cases leads to redundant posts and that's something that we don't lack of here on bitcointalk.
Another solution is for managers to say to their potential clients that unless they wan't to fill signature campaign with spammers and shitposters, they will have to pay way more than average campaign is paying at the moment (50-60 USD) or have very attractive rules. I might be wrong with my assumption, but somehow I think that doesn't happen often.