When I'm king (that's right, I'm planning a coup!) I will make the browser manufacturers handle this with a standard dialog the site owners can only customize i

When I'm king (that's right, I'm planning a coup!) I will make the browser manufacturers handle this with a standard dialog the site owners can only customize in limited ways. Users will be able to express general preferences and they will be respected (i.e. I can choose to opt in or out of marketing-related cookies in my browser settings, rather than on a per-site basis).