Problem: The version history displays the number of changed characters for each change (more characters in green, less in red). When comparing two versions in the diff view, however, this number is not displayed. As an editor, I would find this number particularly useful in cases where only paragraph marks (and the like) were added, which are actually only a few characters, but make the change look much bigger.
Original wish (German): https://de.wikipedia.org/wiki/Wikipedia:Umfragen/Technische_Wünsche_2017/Wartung#Anzahl_geänderter_Zeichen_auch_im_Versionsdirektvergleich_.28.22Versionsunterschied.22.29_angeben
This ticket is tagged as Need-volunteer to be tackled during the Wikimania Hackathon 2017.