Lets be honest here for a minute, do you go to someone's trust page just because he has a paid signature? The neg stays as a clear warning about the person's behavior/morality
In most cases they could be tagged as neutral or negative. You could check the 12dailycoin campaign thread
https://bitcointalk.org/index.php?topic=1322129.20, actually higher level members wouldn't risk their repution to join it. Beaides that, it is not recognized as proper sign campaign, without an escrow.