This, or some version of it, is a very good idea. At the moment, bot voting on lists of designated authors is a particularly blunt version of delegated voting. The bot list system has some advantages. But, inevitably, it means that, while these votes have enormous sway, the people who directly benefit from the votes have more information about post quality than the people doing the voting. In the long-term, that has the potential for abuse and to drive down quality.
One of the biggest challenges for Steemit to overcome if it is going to thrive long-term is this kind of information asymmetry - it's well worth reading about the Market for Lemons, which deals with this problem in the context of buying second-hand cars.
OK will give it a read when I have a moment. Thanks.