Mixer signature campaigns aren't the only signature campaigns around. There are other more. Are you saying that removing mixer signatures will kill the ecosystem of the forum? Don't overreact.
Without problems from mixers, theymos even considered to ban signature advertisements too. Signatures and signature advertisements were not here at beginning so
the forum will not be killed even if all signatures are banned.It will not, but the traffic will reduce as users will be reduce in numbers as well. I think we have to be realistic here, one of the reasons that our forum got more popular is because of signature campaigns, so there's no reason removing or banning it, and I believe there was already a solution to that problem in the past by introducing the merit system.
We can't compare the discussion about sig camp and the recent news about mixers which the law might go after of those violators or the source of such. So it's understandable why we are in this situation now, but there's still time, we can brainstorm and maybe the forum would be able to come up with some good ideas that could change for the better, afterall, that's how forum should work.