The editor is very basic. I would love to see buttons introduced that simply insert a note or a callout text box that doesn't require coding knowledge to implement.
Another feature request is to allow readers to select a particular article version, for example, some users may be using an app version 1.0 with different documentation to the app version 2.0. A simple toggle at the top of an article that's easy to implement (i.e., no code required) would be fantastic.