what benefits are u talking about? maybe amount of coins which will be given during bounty?
Do you know another benefits? Yes, it is an amount of coins which every user can earn. Bounty is a good instrument at all, it is efficient for developers and profitable for users.
I've seen a few bounty campaigns in my days. Quite a business model, I tell you, fits in just great with the ICO. It's a great way to start off a successful ICO campaign.
But many dev teams start their ICO without a bounty. The bounty launches several weeks or months later just to make the project more popular. Remember that the bounty requires some investments from devs too.