Well, that presentation really didn't serve up what I was hoping for. Most of it was stuff we already knew and/or previously announced. As for the new stuff...
Mary Poppins. This is a lone exception, I'll certainly take this for sure. Too bad they really skimmed over this announcement.
As for the renaming/formations of the neighborhoods,
I don't hate the basic idea. You can see they're trying to make it all make sense. I don't know what about Guardians will involve the idea of "Discovery," (I suspect nothing!) or why Imagination falls into "Nature," but an attempt is being made to give some semblance of cohesion to the former Future World.
Yeah this is where I am too, there's an ok idea here with the new districts but they're already betraying the concept of them on day one so I don't know what to think.
...I'm pretty much in the same boat. I'm fine with the idea, though when certain parts don't fit the neighborhood you're placing it in, it's not a good sign. Much like one of the new Epcot posters being one of the neighborhoods.
The Walt Disney Statue. This is the first W.D. statue which I legitimately don't like. The park we got was never like his actual vision, nor what it is now. This feels like pandering/back-patting at it's worst for me.
SSE 5.0. While I'm not a fan of the current version, it just needs a few tweaks such as a actual ending and a better script, all of which is completely doable. With what was teased/shown, I think a lot of us are hoping they prove our fears wrong, myself included. But that concept art is just so on-the-nose to Moana...