Ask HN: If there is an app store mobile cameras,what would you want to build?

[sachinprism]

While Snap and Instagram are ubiquitous camera first apps, and iPhone 8 rumored to have a 3D camera, If there were apps build solely for your camera, that you could access only from your camera (like snap filters), what are the apps you would want to see or build? the obvious ones being google image search, amazon search et al