One of my biggest peeves with WP over the years is thumbnail images. Why does the system have to create SO MANY? Themes have made this problem worse, and sometimes they are still a plague even after setting all media sizes to zero, editing theme functions or using a specific plugin to stop them. (Obviously, this doesn’t apply to all themes, but you get the idea.) I have resorted to linking images from a third party site to avoid this nonsense.
Will future versions of CP address this issue? Because it really needs to go away.