I'm sure this was already discussed, but with 500 pages I'd be reading all day before finding out. The thing that irks me the most about Pixar Pier is that most of the positives were either stolen or revamped from old ideas. Firstly, the idea of a candy shop on the boardwalk is not a new idea, as we can see in this concept art for the revamping of Paradise Pier in 2009:
In this image we can see a banner for a "Candy Palace" well as a theatre, which makes me think that they already had some sort of blueprints for the conversion of this part of the park, and it was given a Pixar overlay. The theatre for Pixar Pier was dropped for the bandstand, but my guess is that it would have been virtually identical to these original plans.
The second thing that bugs me is that some of the grandest elements that actually accent Pixar Pier well are carbon copies from Tokyo Disney Sea's Trolley Park.
Tokyo:
Pixar Pier:
Even some of the things we saw in the concept art for Pixar Pier that didn't come to fruition matched set pieces found in Tokyo. It explains why Disney was able to quickly fabricate these set pieces for Pixar Pier, yet still have so many of their custom parts missing, such as the Luxo Lamp, Bing Bong, and the late arrival of mini-Zurg. Very revealing of how rushed this project was.
It's also interesting to note that the Jessie figure that will be in front of the carousel seems to be an exact copy of the Jessie figure from Shanghai's Toy Story Land.
I have a theory that Pixar Pier was originally going to open alongside Star Wars: Galaxy's Edge next year, both to alleviate crowds of SWL and to open it's headliner attraction, The Incredicoaster, alongside the release of Incredibles 2, which originally was going to come out in 2019 but was bumped to 2018 when Toy Story 4 started having production issues. Not only would it have given them more time to get everything fabricated for the land and open everything at the same time, Flik's Flyers would have had time to go through a retheme, and it would explain why the announcement at D23 seemed to come from nowhere.