If I can't find a bounty project that's already listed and trading I'm done joining bounties.
No matter how reasonable a project might be if the teams decided to stay anonymous I will pass by
Whitepapers and roadmaps aren't enough anymore,developers should be ready to face the public and be ready to show me they are ready to work ,not experimental on 'it might became success or failure .
I believe that uncertainty has been one of the most remarkable characteristics of this market from the beginning, so even the fact that the requirements you mentioned are met would not guarantee the obtaining of a substantial reward as it used to be.
Therefore, everyone is free to devote their time to what suits them, but also only those who take risks are worthy of the best rewards. If you think that bounty campaigns are no longer convenient for you, there are endless online business opportunities that could be more profitable for you.