Today I noticed that I really miss seeing the subcategory information when looking at Documentation
Sometimes I am not sure in which category the topic is, so I don’t visit a specific subcategory. But of course I have an idea in which categories I expect it, and in which I don’t.
Also the subcategories clearly separate the target audience - for example Documentation > Hosted Customers and Documentation > Self-Hosting or Documentation > Site Management and Documentation > Using Discourse. This information is missing when the category is hidden so it’s harder to decide whether this might be the right guide for you.
