Necessary Rated 5 out of 5 stars

I consider this add-on necessary. Would love to see an option to 'protect' the tab from being reused, for example say I bring up the history side bar and forget to middle click while 'downloads' is my only open tab.

Would like to protect it not only from being reused, but from firefox being closed if there are still downloads running. Perhaps there is another add-on for that, and someoen can point me to it?