I think I understand How does the bounty system work? when no answers get posted:
What happens if there's no answer after the bounty period?
If, after the end of the bounty period, a question has no answers, the bounty will expire and the reputation will disappear.
Part of what you're "paying for" with a bounty is for higher question visibility and increased answerer motivation. A bounty does not guarantee a response and is not refunded if none are received.
but I had an idea for a small improvement.
This answer explains:
[...] although you didn't get an actual answer, you did get 7 days on the Featured tab. If you got refunded, then you could keep your question on the Featured tab forever, which really reduces the benefit that placing a bounty has in the first place.
I get this, it sucks to not get an answer.
It sucks even more to get an answer after the bounty expired.
Then you need to rebounty, or just apologies that you can't give the new answerer the bounty question.
It's such a problem, lots of stacks have 'unending bounty' meta posts:
- Literature: List of bounties with no deadline
- Code Golf: List of bounties with no deadline
- Puzzling: List of bounties with no deadlines
- Sci-Fi: List of bounties with no deadlines
- Please add more if you find them
Are these causing issues? No, but they're clunky and a symptom of a problem causing people trouble.
Why don't we save some of the trouble, and just expire the featured part of the bounty after 7 days, and if there's no answers at the end of it make it dormant.
You would only be allowed 3 active bounties, and any dormant ones don't count towards that. If you get an answer on a question with a dormant bounty, the counter starts at the end of the last bounty ending. I don't know if it makes sense to put it back into featured list - I'm thinking not, for now at least.
Can this be abused? Not really, the abuse is getting 3+ questions featured. You can't sneak a fourth one it by bountying an unanswered question, as it start active.
Can you get stuck by building up a backlog of dormant bounties? Yes, but that should be rare and/or unusual. If more than three questions with a dormant bounty suddenly become active, your fourth gets queued up, and you wouldn't be able to start a new active bounty between one ending and the next starting! But all you need to do is a) wait ~7 days b) accept a bounty. There might be a sensible limit on dormant bounties, and some way to manually expire the bounty to let you get around that limit. After it's expired, you can't get it back.
This feels like a lot of work, so I get this might get deferred. But I'm hoping I've raised the problem so more people are aware of it.