I'm unable to link subfolders within org documents.
The link [[file:mysubfolder]] opens the file mysubfolder.org.
you can link files like this:
[[inbox]] - link to inbox.org [[inbox.org]] - link to inbox.org [[file:inbox.org]] - link to inbox.org [[inbox::Maybe tasks]] - link to the item "Maybe tasks" in the file inbox.org [[::Top Priority]] - link to the item "Top Priority" only for the current file
Due to the implicit .org extension in the first example I'm unable to link subfolders.
My suggestion is to interpret filelinks with a trailing / as folders ([[mysubfolder/]]). This would also work in Emacs.
Interesting idea! It would be great to see how many other users would find this helpful.