It's sure a way for curators to get more from the author's. But I think might be it will not be different than up vote bit where you send some money to get up vote. Think about a scenario where an author has set 75% and thus the curators will upvote it, the questions here is how can we judge the quality as well as how can we make it different than the normal up vote bot which somewhat does the same thing.
the difference is mentioned in what I wrote - when it is all organised on the post, the curator cut is also open for downvoting. Bidbots had essentially protection from downvotes and the author took the risk.