An interesting concept. However, I'm wondering if it would result in curators changing to only curating those authors who choose to use this, leaving those who already curate for content because they feel it deserves it, rather because they think they can earn from it, in the same predicament as they are already in.
I don't believe it will go that far and as mentioned we will have methods to prevent that from happening by letting authors not publicize what percentage they're giving extra to curators if any.