Create sub-topics?

I was just thinking that I would love one level of sub-topics as well. This could achieve the one level of nesting/hierarchy, while also keeping the interface clean so it’s not a bunch of nested conversations.

Examples of how I might use it:

  • Create a topic for an episode/post/article and have people create sub-topics based on their reactions.

  • Create a topic of a question and then have people create sub-topics with their own answers (bonus for option to limit one sub-topic per person)

Have you made any progress on creating a plugin or figuring out how to do this with the current Discourse features?