I would like to see that when exporting an embedded picture to file with the action of the type "Export cover to file" that all the properties are taken from the current picture - and not just from the first.
So, e.g. if a cover file name is defined as
%album%_%_cover_type%_%_cover_width%x%_cover_height%
and there are embedded picture with the property
front: 600*539
and
back: 840*472
then the resulting filenames for the picture are:
My Album_Front Cover_600x536
My Album_Back Cover_600x536
whereas
My Album_Back Cover_840x472
would have been correct.
PS: even though most front and back covers of the same album would probably have the same size, there are a number of other possible cover types that most likely have different properties: Leaflet, media, icon, Publisher logotype etc.
So it would have its use cases ...