Firefox Idea - Organize History on Back button into related sites

Just had a quick idea while surfing through a horribly organized
forum. Why not organize the back button's history into related sites?

I was browsing through a forum which required you to follow a link for
each reply to a thread, and when you reached the last reply there are
handfuls of links you have to go back through using the Back button.
Clicking on the back buttons history shows a list that is flooded with
similar named which could easily be lumped together into a sub-menu.