This is an issue that should be attended to . Bounty managers should always have it that they need to assist hunters to get what their reward is. Some developers have taken from hunters what their benefits are.
There are some points that should be tackled about this...
1. Ensure that rewards are distributed before they go into exchange. This is because when the coin goes into exchange and starts performing and increase, developers find it difficult to redeem the promise. Dego bounty is an example on that.
2. Always have a good bargain protection for hunters so that no matter what, the reward will go to the hunter after the bounty.
3. Suggest payment in valuable altccoins because protection of workers should be important to any company.
All the points that you say are very good for bounty participants and will also really help bounty participants in terms of their work appraisal, but what I would like to do is that at this point in time there are still one or two bounty managers who don't care about their bounty participants, so some bounty participants still feel disappointed when all their work is not rewarded properly.