I'm for it, just like there's an option to lock a topic or disable its smileys. I can't think of an example for its usefulness right off the bat, other than the WO thread, which was already extremely popular before the invention of merits.
Isn't it more efficient just to remove the meeting source status of the users who are abusing it.?
Of many posts in WO deserve merits. And many users there doesn't even have a signature campaign..