I'm really looking forward to the resolution. I have no idea what it is going to be, but I fully expect it to be glorious. I do know it won't be Harry casting "Problemsolvius" or someone showing up casting "Savethedayius". I know this because Elizier went to great length to crush that expectation at every possible avenue.

So, maybe Harry uses partial transfiguration to kill all the Death Eaters. This still does nothing to solve the Voldemort Problem. And so it seems most likely that the Voldemort Problem is not the actual problem of the fic. As others have linked, Voldemort proposed a long time ago that he would duel Harry and "lose," and then Harry is established as the eventual philosopher-king of Britain. Maybe, decades from now, Harry manages to stop Voldemort; but probably not.