I hope Apple will make an option to auto disable Night Shift when displaying media. Like opening a photo, editing photo, watching movie (and re-enable it auto on pause) and most inportant: using the camera!
It's a nice idea. I'm going to consider some of things that would have to be thought through though:
It'd be easy for iOS/Apple to detect when you're viewing media in their apps like Photos and Videos, but what about when viewing media in third party apps and websites? I'm not sure if there are APIs for apps to declare 'I'm viewing media right now' so they'd either have to implement that and make apps use it, or have this only work for their stock apps, but then you're excluding those who use third party apps for media.
Another alternative would be to have a list of all installed apps from which some can be selected to be excluded from Night Shift. f.lux has this feature on OS X. It's still not perfect as you may only want certain features within an app (e.g. its media playback) to be excluded but not everything else.
So there are a couple of options here which would enhance the feature but I don't think there is a perfect solution, and I can see people who are really fussy about colour accuracy still going in and out of settings to disable/enable regardless of options available, because of the limitations above (and their fussiness!)
I reckon the vast majority of people who use Night Shift will not care too much about the colour accuracy when editing photos and watching videos. We mentally compensate for it and most people's editing is not dependent on perfect accuracy.
A CC toggle would be great.