Wouldn't it make sense if the 'invested' reputation into a bounty would next be added to the new bounty? So if for example I would post a bounty of
+100 during the grace period and had a bounty of
+50 for a week the second bounty would only cost
100-50=50 reputation. This lightens the 'burden' on the question asker (who already is sad to see his question gone mostly ignored for the entire week) and prevents the 'waste' of the original reputation without any chance of it being 'misused'.
- A user posts a bounty (costing it's full reputation cost of
- For 7 days nobody is able to figure out a solution
- On the 8th day he wants to post a new bounty and believes no answer deserves the bounty, likely also meaning no answer has at least two upvotes (should possibly be a requirement). This removes the original bounty from the system and a new bounty is posted costing the new full bounty reputation
Yminus the original
- This is not a refund in any way, because the user can never get the actual reputation back and the reputation is still applied to the same question
- For all practical purposes this is exactly the same as if the user awarded a bounty of
Yfrom the beginning. His 'unfair advantage' is that he gets 2 weeks of prime time attention rather than one, however that seems a meagre consolidation price for somebody just looking for an answer to his problem.
To judge this it would be useful to see how many bounties end up going unanswered (defined in this context as no answer with at least 2 upvotes and no manually set accepted answer), I tried looking up this information using the Data Explorer, but as far as I can see this information is not exposed. Either way, in certain tags bounties dying like this seems to be a common case.