Currently, the file chooser is rather annoying: it always starts at the directory that contains the Editor (except when the Editor is inside a ZIP file, in which case it starts at some weird directory).
It would be more convenient if it would start at the directory where the last file was chosen. Furthermore, it would be nice to have some buttons to jump to the Documents/Home folder or to go to another drive.
Or perhaps using bindings for the native file chooser?

The file chooser menu will be replaced in Editor 11.4