Well, I have to say I dislike the solution proposed by MS because when you click on "view required" link the focus is switched to a different node, and, when you click on back arrow to come back to updates view you loose any search filter. Yes, it is better than nothing... and far better than consult native reports, but, in my opinion, it is not handy solution.

My proposal is to add two new tabs on detail pane of update view: one is to view devices requiring a specific update and the second to view devices that already installed the update.

I already implemented the solution on my own, I attach a screenshot. But I don't share this solution for 2 reasons. First, each time the console is updated you loose the two new tabs (and you must manually add them again); second, my query reports the actual "real time" update status on clients and results can be different to counters on SCCM console due to summarization refresh period.

PS: solution tested since SCCM 2012R2, up to SCCM 2002