There is a clear difference between remixing for swag and handling with care and genuinity what you choose to remix (and Jacob clearly knows that).
I've rewatched the series fewer times than "The End" but that isn't just because of the runtime. While Eva's emotional climax was as good as it was, Anno found the need to make this.
When I was younger, I used to spend days defending the Eva series as one of the most important, revolutionary and deeply personal works ever created, so I don't really want to get overboard here: The End of Eva not only showcases an enhancing of everything…
Self-aware dementia greatness! Perfectly mixes style and substance and achieves to have surprisingly deep undertones, mostly about the path of maturing towards adulthood. Characters feel organic in their characterization even in such an absurd setting. That's where its magic lies. Flawless usage of the medium.