I know changing and modifying habits is difficult but...
I'm thinking this is an old feature. I wonder if anyone finds it useful still today. To me it occupies a space in the list that could be used to show for example FPS.
Sometimes I even downloaded a "2 CD" by mistake. To me it is more annoying than useful.
Besides it is relatively easy to split a subtitle file.
I think CD number should be removed, at least from the web listing.