I think those cases are dead or will be dead because it can be used by some really bad projects while bounty is a working tool for promotion. So, bounty hunters are necessary for the teams and they will need to arrange suitable conditions for them to work. Bounty can't be finished - it's marketing.
Bounty hunters are the one spreading awareness for the project so they should get the rewards they deserves after exerting an effort, and not the useless tokens without value. However nowadays receiving shitcoins after the project ends is quite common it means you didnt end up in a good project. You can prevent this from happening by participating in a legit and with potential bounty.
Just participate in campaigns managed by reputable managers here in the forum. And you will find out that those legit bounties are mostly bitcoin paying campaigns. Even if the payment is not too big at least you know at the end of the week, you are getting paid. Better stick to reputable BMs because the chance of getting screwed is very small to none.