There are a lot of factors on how to know a good bounty.
1. Responsible Bounty Manager, I think that is a very important factor.
2. Good project, if the good manager is good bad the project who are promoted by the bounty team is worse, then it was a failure.
3. At least pick a bounty that offers the weekly distribution of rewards.
4. The project is already in the market.
Some of these factors you mentioned are not a yardstick or guarantee a good bounty. Let take a look at them one after the other.1. Responsible Bounty Manager, I think that is a very important factor.
2. Good project, if the good manager is good bad the project who are promoted by the bounty team is worse, then it was a failure.
3. At least pick a bounty that offers the weekly distribution of rewards.
4. The project is already in the market.
1. Responsible manager: does this guarantee a good bounty? The answer is obviously NO. Haven't you seen a reputable managers manage a failed project?
2. Good project: the question here is how do you identify a good project?
3. Weekly distribution: aside signature campaign, most of the project won't agree to this term. And besides, I don't see this workable for some managers who always update sheets lately.
4. Project is Already in the market: going by this, you've ruled out new projects conducting a bounty which in one way or another help to grow their projects.
Conclusively, the above can help reduce the risk but not absolutely a factor to know a good bounty. After all, it's all about taking risks.