I think heif-gdk-pixbuf package should be recommended by ubuntu-desktop or ubuntu-desktop-minimal metapackages, because HEIF (.HEIC ) pictures are very popular in these days and not all people keep eog viewer installed ;)
also we should patch org.gnome.eog.desktop file to add "image/heif;" to MimeType=
I think heif-gdk-pixbuf package should be recommended by ubuntu-desktop or ubuntu- desktop- minimal metapackages, because HEIF (.HEIC ) pictures are very popular in these days and not all people keep eog viewer installed ;)
also we should patch org.gnome. eog.desktop file to add "image/heif;" to MimeType=