What makes a bounty manager better? It's not about the success of the projects they introduce, it's about
1. How the handle the campaign
2. It's about fulfilling what was promised to bounty hunters
3. It's about fighting the fair fights for bounty hunters
The success of a bounty project is not in the hand of a bounty manager, the ball is in your courts, you are responsible for the bounty projects you choose, if they fail it's never bounty managers fault. Always remember this.
If bounty manager is not in team member of project then it's totally useless to blame bounty manager for project fail. If project fails somehow it's because of team management nothing else. And this is bounty hunters duty to check out how much reliable project they are going to work. I totally agree with OP's point. If you didn't find those point in bounty manager then you should be careful from that manager. A good quality bounty manager always make right decision and stand their word no matter which kinda problem he/she facing.