File management is still very poor. It also has functionality that is not well done.
For example to delete a folder asks for confirmation as usual, but not when you delete a file, it disappears immediately, and this can lead to big problems. I think it's a big bug and Sublime does not maintain consistency between the performance of the same function for folders and files.
On the other hand it would be very nice folders and files could move inside the structure and thus modify the location simply dragging a file. Even you should be able to add files by dragging them from your system or with the paste function after copying them to the clipboard.