🚀 Feature

Category in docs are only container for subitems (topics). But some help system enable category to be introductory topic to subitems (ie containing text that introduce the subitems or refers to subitems ie see also links to subtopic1, sub..)

Have you read the Contributing Guidelines on issues?

Yes

Motivation

Interested to use the Docusaurus Help System but before investing in it wan't to know the roadmap

Pitch

It's pretty useful. If you can read the introductory topic, you sometimes don't have to click/navigate to subtopics. It'a a better system than having a first topic (~overview) refering to following topics in a same level appearance > introductory topic has to be a level upper the subtopics..
Example of documentation with introductory topics :
https://www.gatsbyjs.org/docs/deploying-and-hosting/
https://www.innovasys.com/help/hs2019.1/authoringcontent.html
https://markdownmonster.west-wind.com/docs/

Hope my explaination is not too hard to understand..
Thanks to the docusaurus team for their work

Regards, Xavier