So, what do we exactly want for wallpaper package distribution?

As suggested, I've quickly hacked up a PHP script (which of course can be put online) that accepts 4 800x480 images and generates .changes, .dsc and .tar.gz files suitable for sending to extras autobuilder.

But, do we really want to fill extras with -wallpaper packages? Currently, it puts them in user/desktop category. I am sure theme makers are not gonna be happy.

Are sets of 4,8,10,... wallpapers per .deb package better?

Do we instead settle for an extra Wallpaper Manager app? A repo separated from extras?

Any ideas?