Yeah man this should be standard, as you say similar to zapraisers, it encourages V4V by having a free market of plebs offering bounties for providing help to others :)
I think you just stumbled upon a great feature. I must try next time I have a question. V4V should be initiated not expected.
See I have my best ideas after a wake n bake 😅 Agree 💯 V4V should be initiated not a default. Luckily this feature lends itself to being optional, as a user would presumably tap an option to enable the bounty feature manually when posting a note.