ICO and IEO are for raising funds, what about bounty? To create awareness around the web to get more investors right? This makes it two ways for projects to gain investors, I would have said ' why do new projects need bounty hunters for then' but bounty hunters are playing a big role here as you can see that's why we keep seeing bounty campaigns from IEO projects, although not all of IEO cares about bounties
I still believe that bounty hunters have huge place for the promotion and to reach mass. If team don't promote through bounty hunters, how team can reach to mass people? Besides this, forum signature have a huge positive impact on the project and hence i can surely say, "signature plays the most vital factor for the success of a project". The more higher rank holders wear signature, the better its promotion and trust increase.