From the left nav, if I click a topic name, I expect to go here: so that I can see all the associated view subtopics.  

However, that's not the case.  Instead it just pulls in the posts from that topic into the "main feed" view  which doesn't allow me to view the associated subtopics of that main topic.  

The only way to see this today is to click on "All Topics" then, click the tile of the topic you want to see.  

Why this seems off:   There's no way for members to immediately know if a topic on the left nav has associated subtopics.