~snip~
Merit system already failed since years ago, and any requirement with merit now are pointless to solve spamming and farming. Especially if demerit won't be deployed and used severely.
You are not far from the truth, but I wouldn't say that the merits system is a complete failure - because if you remember how it was before it existed, it definitely delayed (slowed down) advancement in the ranks for those for whom the forum is only a source of income and nothing more.
I would even dare to say that the system is not as bad as the decisions of those who implement it and those who directly participate as merits sources. What I really want to say is that the merits sources should be thoroughly analyzed, and those who are inactive or found to be performing their duties poorly should be removed.
The way this system has been maintained in recent years clearly shows that the reduction in the number of sources in the general part of the forum and the increase in local boards has not led to anything good. Some boards have become breeding grounds for alt farms, and the three merit sources that were recently removed show that some have been abusing that position for years.
As for demerits, I think it would be a bad solution because it would cause a lot of controversy among members, whether it is a secret or public demerits. The other forum that many members from this forum use has this function, and it is not something that is a solution for signature spammers.
The solution is to not accept them in the sig campaigns, and we all know whose responsibility that is.