Actually, this is more true than you may consider. The severity of the risk in taking from author rewards is that you're also taking away from all the businesses running frontends that utilize beneficiary rewards from author income. So this suggestion will hit dtube, dsound, steemblr, Engrave, eSteem and any other projects operating on the beneficiary model.
A 11-20% income drop for authors is the same for those businesses, which could be a deal breaker...