I really like the thought you put into reducing the steps to share a photo with friends. If you’re thinking of creating lists of users to send a photo to all members, why not leverage the existing groups you can create in Messenger? List them with your recent individual contacts.

While taking a pic, swipe the contact list up to see more contacts in a grid view. In grid view, select one or more contacts, then return to your standard camera view, ready to snap and share with your selected individuals and groups.

One downside is that each photo will be different. That perfectly timed snap is best sent using standard Messenger, to multiple people and groups.

I really liked the way you stepped through your thinking and design process.