You have reported 24920 posts with 97% accuracy
I actually want to see a short-term experiment on a forum-wide sig ban.
I'll put my guess.
Signature bounties will be removed from bounties section.
Some members will leave as they will not be able to make any earnings.
A less number of new joiners, since most registrations happen because of earning matter involved.
Post count will decrease significantly.
There will be negligible spam.
Less work for forum moderators.
The forum will become heaven for those who are here for discussions.