Like many of these I feel like its a good idea in theory but in practice we can see that a number of the people here that are witnesses here on steemit are providing no real value and getting the largest rewards while others that provide lots of value struggle. This comes down to poor marketing methods for witnesses and I feel like they deserve to have their own page or section on steemit that provides truthful information on each of them so everyday users can understand and vote how they feel. It should almost be a weighted system as well where a revote each month is needed to keep the vote value at 100% otherwise it declines value wise over time.