Hi,
every document or example I have read on the net describes Hero Unit as a component with a button but Hero Unit that RSD creates does not have button in it. I don't know if it it possible to add it somehow but simple drag-and-drop does not work as it places it outside of Hero Unit.
Did I get something wrong?

P.S. Yes, I know a "workaround" - using Jumbotron from library.

I always found Hero Unit element hard to work with. However, it would be easier if you just created your own. Its simply a big container, with stuff inside. If you insert a Jumbotron component, you will see its simply a heading, paragraph and button-link inside a container. The amount of time creating these basic element will be little compared to when you might be adding graphics, alignments, and styling. The component is also using special Bootstrap framework styling classes. I'd go with the component to start out with.

Yes, CC should improve the Hero Unit class, but each framework has a couple of components built with the frameworks as well.