I think steem-bounty is great. What could be done is adding an advertisement mode where people are paid for their views, but these stats are not easy to get. 
One might set up a bounty to be paid for 0.01% upvotes of the post, confirming that the reader has seen the post ... ? Probably this is to clunky though. 

Anyways, I think the focus should be on promoting the existing steem-bounty system. The project lives from people engaging with it and for that to work a critical mass of users is needed. I wish you lots of success and will certainly continue using the bounties.