I'm using Dropbox Sync to write down small files to sync things in my iOS app. Because records and datastores are too limited in my case, I can't use Datastore. Unfortunately, these internal files are generating a lot of notifications on my desktop. It annoys the user. The solution is to disable sync of this folder on desktop computers, but it requires an additional step for the user (after having annoyed it). All of this is degrading user experience.
By nature, what happens inside an app folder is less likely to be of interest for an human user. It would be great if we were able to set our app folders as "notifications free" if relevant. One can also imagine per subfolder filtering. For now, my apps are mobile only, but if I want to make a desktop version and use Dropbox to sync stuffs, disabling app's folder sync will be impossible and users would have to live with dozens of garbage notifications. It would be so awful that it would prevent me to use Dropbox at all to sync with a desktop version (even if user would like to use Dropbox).