It would be great if headline and subheadline could have a “Link” option (like image got). So the link option could wrap a whole headline or subheadline with href.
I agree! Headline is a versatile little element. Since it can be wrapped in span and div, I use it in various situations and sometimes I put an anchor tag into it.
A link wrapper container would be even better.
It would allow turning anything into a clickable link.
Oh, and the shotrcode wrapper.
And a… Ok, I’ll stop now. 
Thanks for sharing your feedback here. For now the best approach would be using custom HTML unfortunately. It’s also something you could do with a bit of jQuery.
I don’t see us adding link controls to the Headline element, and the challenge if we did would be a place for all the interaction controls like hover colors.
We will be adding a “custom attribute” control. It’d be pretty easy to setup a data-link-href attribute set to a URL, then have one script site wide that wraps anything with it in an anchor.
We also have an open feature request for linking entire columns. I could see this potentially being added to other elements like the “link wrapper” Misho is referring to. I’d really like to get in the “shortcode wrapper” idea as well, but it just hasn’t fit in yet with other things we’ve been building.
Anyways, clickable headlines might be possible in the future, but via other means that may take a little extra work instead of directly adding link controls.