When you select a link and go to Properties>Show Download URLS, I would like to see listed all related URLS that JDownloader knows about for that link, whether they be Source, Data, Container, etc. The particular type of link should be somehow indicated for each. Perhaps there could be separate tabs to list each type of link together (Source, Data, etc.), which might be helpful when selecting multiple links.

People seem to have different needs for what kind of url they want to see or access. The setting in User Interface>Download address display can be used to pick which type of url appears in a column of the Downloads/LinkGrabber table, but the Show Download URLS ought to always give you access to all related URLS.