Let us make new folders with combined tags and give us ranked tags
You allow to give a lot of tags to pictures - it allows me to build semi database of my pictures - i can tag all i want but lets say i tage 1 cryterion: big, small, medium and second: blue, red green. In your app i get six "folders" but what if i want to get big blue one?
With that simple feature it would turn your app into powerful picture database - like i want all Tom pictures excluding ones with Ann.
I also miss the ability to create tags which will possess value - like number of animals on photo - that would allow me to transfer and organize all my photos in your app
You can now filter by multiple tags to achieve much of what you’re looking for