I noticed as well the advent of @hive-bounty and I had a look as well.
I think that it can be used as a meritocratic way to distribute some Hive on posts that deserves attention or interactions as well, to stimulate it.
Besides, yes, you are right when saying that a "Summary post" would be useful for them as well to gather some resources with the "Bounty Ranking posts" with a small chart of the Bounty created (with a small cashback on the Bounty creators eventually) and the bigger bounty earners.