ISO Downloader doesn't offer some openSUSE images
Leap 15.0 is development version, it would be nice to display current stable (42.3). 15.0 doesn't even want to download :C
Since Leap 15.0 as well, we got supported Live images for Gnome and KDE: https://software.opensuse.org/distributions/testing (visible in "Live" tab)
It would also be nice to offer small NET installation images for both Leap and Tumbleweed for people that might prefer downloading only what they need (as openSUSE images tend to be quite big otherwise).