As a user, I would like to be able to have inline discussions on Wikipedia articles.

The feature would be similar to Google Docs inline commenting tool:

Some product ideas / requirements:

• Comments would conceptually be the same as Talk Page edits, except they would be visually organized in the Read and Edit modes of the page, so that you could read and participate in discussion inline, rather than on a separate Talk page.
• Comments could be anchored to a specific character in text, or attached to a highlight T312758: Add a highlight tool to VisualEditor
• Comment threads should be viewable on the Talk Page as well
• Comment threads would be associated with a particular revision of a page. We can figure out a mechanism to allow viewing comment threads on newer revisions, or for moving comment threads from outdated anchors to new, valid ones in the current revision.