When right clicking on any link there is a "bookmark link" command in the context menu.
After clicked the command, Copy bookmark link to clipboard?
No it would "bookmark the link" same as bookmark this page. So if your on a webpage and there is a link you want to look at after and you don't want to bookmark that page that the link is on
Interesting idea, let us think about it. For now you can just drag the link to bookmarks bar/panel/menu.