I like the way this component buttons look in the default way they are laid out. Perhaps one could fork the repo and make their own changes or make a PR?
It is also a good idea to have your own copy of the guide to basic interface elements to refer your users to. I believe the guide needs more details and hope to make this happen.
The timeline scroll should have more details about the functionality. There is a bit of info in the user guide but these documents could be linked better with more details.
I just usually tell my users that almost everything in the Discourse UI is clickable.
