I think the Valor addition is a nice one. They realise that people simply don't want to keep farming Tanaan Jungle, and the feature of Valor, in all it's forms, adds another option of giving people what they want, be it through dungeons, raids, etc. And really, it's quite a flexible reward system. From mythic to basic content, it can reward everyone. Some people may not want to go for the valor, which is fine. You don't have to, but having the option of it or farming is a good thing overall for those of us who feel we should be doing something to better our gear through relatively easy means, especially if we can do those things with friends.