This is a suggestion that might take some time to implement:
I learned to love the URL-field in the info panel, where I can connect to other documents in my database, if I do not use it for web URLs.
But there is always only one place we can relate to from one document. So I would like to have a section in the info panel where I can add and name as many URLs as I like: “Original download”, “Annotation”, “Summary”, “Translation”, whatsoever.
For the time being I am planning to set up a template “document link collection”, which should become the only document to be linked to, where I can add all these links in RTF. Should I be successful, I will post it. …