As said in this [1] article, one of the worst thing camera makers are guilty of is not slapping Android on their cameras to open up th instant publication, photo manipulation, etc. It's a shame that a professional camera is 90% of the time simply not as useful as a smartphone, even ... as a camera. [1]: https://mondaynote.com/memo-to-camera-makers-put-android-in-...
What you really need is an API set that attaches to each function of the camera that third-party developers can use process/publish photos.
So, instead of turning on the camera and seeing a grid of apps, each one you have to figure out separately, you should turn on the camera and see the camera interface. Apps can then add additional functionality to this interface. And when it comes time to review the photo, a third-party app can enhance this section as well, perhaps to post on Instagram or other effects.
But the grid-of-apps is a horrible model for a fixed-function device like a camera. You're ALREADY in the camera, don't need to add another separate layer to interface to it. Just add the ability to enhance these sections.