Firefox feature I would like
Sometimes I am using tabs to browse pages in Firefox and come across a page that I would like to open in a new browser. Of course, this is very easily done by right-clicking the link and selecting Open in New Browser.
However, if I already have the page open in a tab, I would like to be able to right-click the tab and have something like "Move current tag to new browser" and then have the current tab moved to a new browser instance, including all the tab history. The original tab could then be deleted from the original browser instance.
I bet there's already something like this on the plug-in page.