I do not think a ban on Bitcoin mixer would make any difference to the forum. What I felt after reading a lot of discussion that the forum has led down the community and those part of mixer campaign are not at all happy with the decision.
I believe that the forum gained a lot of activity because of the Mixer campaign, with a good pay rate you will have good motivation to be in a healthy conversation, but Theymos has to do what he has to do even though it hurts many members who are considered good contributors on this forum.
After January 1 we will only see casinos and a few other platforms but casinos will rule the forum in terms of signature campaign.
But I'm sure Theymos is reading all of the members' opinions and we will see if there is a change of heart, it's not over until it's over until Theymos post that he will not change his mind.