Rise: links to other lessons, other than buttons

Hi

would there be a way of linking to other lessons in the course, to create something like a shortcut menu, other than using the button stacks? I'd like a more visual way, either by integrating the buttons / links with other blocks (accordions, tabs, labelled graphics, branching scenario etc.), or by replacing the button with a picture. 

I can see from past discussions that many other users have asked about a further level in the architecture of Rise courses. My own materials have 4 levels (course, modules, units, unit blocks), whereas in Rise you can only link to other "lessons", but not to lesson blocks (below "lessons"), nor to "sections" (above "lessons"). That's why I'm writing my unit blocks as Rise lessons, but I'd need a good navigation solution to emphasize that there are 3 "lessons" for one topic unit.  

Thanks!