I liked an idea that was floated by the old PAX network - that TV stations should be licensed to the DMA they are in, and be allowed to create a single frequency network to cover the entire DMA. They had some rules in their proposal that would have required stations to cover rural areas not just urban areas, so that no one who has signal now would lose it. But it would have greatly benefited networks like PAX/ION, CW, MY, who tend to have affiliates that have less than optimal signal or are licensed to a secondary city in a DMA not the main city.