As Sarah mentioned in the article, Hierarchy is actually two years old. It hasn't gained much traction primarily because it's difficult to quickly educate people about what it actually is. It's almost one of those things you have to see in place in one of your existing projects before you have that lightbulb moment.

With 1.0 being a complete rewrite I took some time to put together better screenshots and hopefully that helps to illustrate the power of Hierarchy. I'm really pumped on the project at the moment and as of this morning converted the Add New Page button at the top of Hierarchy to be a Shortcuts menu that gives you quick access to all of your Custom Post Types and Taxonomies. This will be a big help for huge sites that have a ton of pages.

Hierarchy is on GitHub so please feel free to check out the code, submit Issues and PRs, and we'll make Hierarchy even more useful!