Improving unlinked mentions

For me, unlinked mentions are new connections that I missed. When a new line appears in this section, I always try to create a link.
But there are times when I don’t want the link to be there and I don’t want it to appear again. Please make such a possibility as ignoring this unlinked mentions.
The second suggestion is to make it possible to link all occurrences for a particular document. This can be useful when there are a lot of attachments in the document (my record is 26). Clicking on each link is quite a chore.