I’d love to see VIP moved from Mail’s settings to Contacts proper, so that I can make sure the people who are literally “very important” get through more easily, no matter how they choose to communicate with me. And it’d be great if it happened with iOS 9.
As soon as I saw the VIP feature of Mail, I wondered why I was setting it up in Mail instead of Contacts. It makes no sense. If someone is in my VIP list, they’re a VIP in Mail, Messages, and FaceTime, not just Mail.
Rene Ritchie goes into more detail at iMore.