It is certainly simple but I’d disagree it’s functional _enough_, because of the numerous basic accessibility issues with the fundamental UI components. On ext

It is certainly simple but I’d disagree it’s functional _enough_, because of the numerous basic accessibility issues with the fundamental UI components. On extending the admin – perhaps there’s something to be said about the admin coming with more UI components built-in? For example it lacks any dialog / modal window implementation, or an "accordion" / disclosure pattern. Or things like support for keyboard shortcuts.