I am designing an organizational app, and, per the specs, it has a "favorites" tag/shortcut/folder. This would exist alongside folders and tags. In your experience, is it a good idea to include "starred" or "favorites" tags in organizational schemes?
I notice that, while Gmail has the star, Inbox does not. Google bills Inbox as the future, but Inbox is also full of half-assery, so I wouldn't necessarily use that as a model. Spotify downgraded the hard-coded "starred" tag to just another playlist.
This extremely small sampling at least somewhat hints that research does not favor "favorites" being a fixed category in organizational UI.
Does anyone have any experience here?