Hello! Congrats for this excellent functionality. I would suggest that - if possible - there could be an option to display somewhere the name of the users that recently commented on the section, so we can copy them and add notification templates, like {{u}} or {{ping}}.
Topic on Talk:Talk pages project/Replying/Flow
There’s already an option to insert the ping itself, although it uses plain wikitext, not templates (so that it can work reliably across wikis). It’s currently only available in visual mode, but it’s on its way to source mode.
If you try to mention someone (by typing "@" or clicking the icon: 
), it will show a list of all users who commented to choose from.
Excellent! That doesn't work when editing the source. That's why I haven't seen it. Thanks for telling me; it's very helpful. And thank you for working on this tool.