@chaley - funnily enough that probably comes closest to a feature suggestion I made many many months ago. My suggestion was the ability to offer multiple tabs in the library view, to allow you to have individual searches in each and see the results simultaneously. Even better would be if the tabs (like in many code editors) could be moved into a split layout with a horizontal splitter. So this would allow you to have multiple views of your library simultaneously, each in full with all their attribution/columns. And as you say it could be done in such a way that for instance choosing "Similar->Authors" opens in a new tab without losing your position in the current one.
My Walk Search History plugin was primarily created so I could hit Alt+Left arrow to return back to my previous search when I do "dive in" for a cross reference type lookup. Because personally I want the ability to work with the books in full (editing, tags, custom columns etc), not just see a subset of attribution. And no popup windows to get in the way or irritate me
However I understand my suggestion is not trivial, whereas yours clearly was simple enough to implement. As it isn't a "full library view" I don't think I would make use of it but that's ok, you didn't make it for me
