Almost everyone are here for the money. If the signature campaigns and the bounties are gone for lets say a year, you'll see the real face of many that pretend they care about the forum. The signature benefits were supposed to be some beer money for the time people spent and enjoy here but the greed has turn this into a business.
This is reoccurring topic. I agree with @Beardedbaby if campaigns and bounties are gone we would see less spammers, less merit hunting posts but I think it will kill the fun of the forum. The newbies who were motivated to join the forum because they could earn money will leave only the old timers will remain and a few who really want to maximize the knowledge available here.