On Android:
When I am trying to save a file, Dropbox does not have a search function, making it so I have to go through the entire directory manually.
When I am trying to move a file, Dropbox does not remember where I am, sending me to my main directory, when all I am trying to do is move a file, a folder back or into a subcategory.
These are small things, but they would make the ease of trying to do things on my phone much easier.
You need labels for organization, and sorting by the way