I'm not sure how it would help. Do we have problems to identify campaign managers. Usually it's easy to recognize them - they havr ads about their services in their signature, avatar or personal text, they also have their portfolio. Signature campaign managers is just people who are doing business on forum, I don't know why they would need badges. Maybe then we would need badges for escrow agents, lenders and etc? Because all these things aren't moderated by forum.
And another thing - how to get such badge? Because everyone can announce themselves as campaign manager. For example, Newbie starts bounty campaign of shitcoin ICO - would he get badge after that.
I'm not saying that your offer is bad, but I just don't understand what benefits it would have.
OMG, you are also wearing this avatar.. now I really have to look for who is posting..
Well, at least he don't wear Chipmixer signature...