Right now the filename for files/images/other assets for downloads are named using the title and the asset_type.
It would be helpful to have a separate field for the title and the filename for download.
title: Invoice XY12345, BadWolf Company, 21.08.18
if the filename is empty the title can still be used.
In one case we have a customer giving out a lot of press releases with filenames following a specific pattern. But when they change the title of the asset the filename for the download is already changed.