Sort document by folder

Hi, I would like to request the same content/document folder organization functionality that is present under the 'Library' tab to be present when selecting a document during the email campaign design process where it will be useful if the Library folders can drop down and we can select files to link from there instead of seeing a whole list when linking docs. It can be rather tedious when creating a campaign. I think it would be best for content organization. Please contact me back for me to describe this further(if needed). Thank you!