Rune and Mastery (Riot Recommended)
Like the recommended item builds Riot provides, I would like to see the same done for Rune and Mastery pages for specific champions. It will help newcomers figure out what should work best for them and help out more experienced players who don't feel like building their own rune and mastery pages.
builds". And most sites have a premade section for masteries to be included in the builds as well.