Wikipedia editors very frequently link to prior discussions or individual comments on talk pages, often as a way to build on past precedent. However, the current design of talk pages makes this very difficult.

The easiest current way to link to a past section is to go to the top, click on the section in the table of contents, and copy the relevant portion of the URL, and then paste it in brackets to create the wikitext link. This is cumbersome and introduces underscores which harm the visual appearance.

Individual comments are even worse — the main way to link directly to those is to hunt through the page history to find the diff, which can be extremely tedious for old comments (or, more rarely, to copy the URL from a notification to a reply in a section you're subscribed to).

As the Talk Pages Project works on revamping the design of talk pages, I hope you'll consider adding something like a chain link icon next to the [edit source] or [subscribe] links in section headers, and next to the [reply] button for individual comments. Clicking on this would copy a wikitext link to the section/comment that could then be pasted into a comment elsewhere referring to it (perhaps even with the fancy blue highlight flash when you click on it).