Just attempted to go over the 222 page plan ... made it about halfway.
What did I get from it? This is Disney's attempt at making one unifying look for its mall and drastically increasing retail space. Many of the new stores appear to be on the small side, like what you'd find it any mall. I see new and relocated water features. I see new bus depots and traffic flow. I see Starbucks taking over Wetzels and something called the Observatory taking over Planet Hollywood. I see a new amphitheater on the water near Paradiso. I see plenty of faux railroad tracks surrounding much of it and looking very out of place in front of DQ and Splitsville. I see a MUCH larger footprint for WoD because, after all, the store full of Disney crap ain't big enough already. I see some retail locale called SF Girl having a prominent locale near AMC. Lots of smaller retail pushed out into what used to be parking.
I don't see a thing that jumps out and says improvement to me except, perhaps, having the parking structure.
But I am pretty certain that you will hear about this very soon and Disney will make a big splash with it to take your minds off neglected/stale parks, the disaster that is MM+ and the fact prices are about to increase again!
Just don't be fooled. Even if this is a nice upgrade, people don't visit WDW to go to DD.
Keep your eyes focused on what's truly important.