My questions is that have you seen any bounty campaign without team members and the project succeeded?
I know one - The world's first 100% honest Ethereum ICO (
https://uetoken.com), it doesn't have team members and it reached 310.445 ETH.
I would not invest in this project and I doubt that the amount collected, which is written on the site is real. This token has no idea, project and no benefit, therefore it has no future and cannot be called successful.