I'd love a UI way to enable `?w=1` whitespace mode, especially for html/json/yaml files. I have a feeling a lot of reviewers don't know about it and spend an inordinate amount of time squinting to see what changes when it was a whitespace-only change.
Some similar option for enabling patience diffing as well would be amazing. Those two options in combination would certainly make a not insignificant amount of PRs much more readable.
I created a reminder for myself so that every six months I write an email to GitHub asking for someone to create a user option for this whitespace setting.