Punishing lazy campaigns and their managers would go a long way or just blacklisting their signatures would help (which is what was meant to happen with the Signature Guidelines thread). It can't be acceptable for campaigns to do nothing about spam at all and if they started having their accounts banned and/or threads trashed they'd soon get the idea. I also don't think it would be a bad idea charging ICOs a fee to make their Announcements here or to run a signature campaign as it's these lazy crapcoin campaigns that are causing the most headaches and 99% of spam and staff workload and they should have to compensate for that. The forum loses revenue every time someone chooses to run a signature campaign over bidding on forum ad slots and the worst thing is staff have to clean up their mess for free whilst they rake in millions.
This is a nice idea. I would suggest it should be given top priority and be implemented as soon as possible. ICO projects are flooding the Altcoins section every week if not daily, and I think the great majority of these ICOs are scams, robbing investors and participants of their hard-earned money. I have doubt they're the same people that keep on coming back because they find it's so easy here to rake millions of dollars rather than robbing any establishments or banks which they find it costly and risky.