It'd be nice if the web had a standard API for apps to register and configure keyboard shortcuts for #accessibility use cases.

E.g. right now Github has their own shortcuts, but if somebody wanted to hook them up to an alternative input interface for people with dexterity issues, Github would need to do it manually, or the user would need to stumble through it until they found a way to get at the shortcuts.

IMO every action on a page should be easy to navigate to with a reader or keyboard.