Granted it will be something of a hybrid land as I guess Mickey's face is staying on the Fun Wheel. Still, I am surprised anyone would argue that Paradise Pier/Pixar Pier isn't DCA's visual focal point. As I said, Google Image "Disney California Adventure" and you'll see that by far the most photographed view of the park is the pier rising up across the lagoon. Both from guests and in promotional materials. The nightly show also has the pier as the backdrop. Again, to me it's kind of like saying that repainting the castle in the Pixar colors (which are apparently red, blue, and yellow) wouldn't be a big change because it's only one building among many in the park.
To be clear, I think DLR has done almost everything far better than WDW for at least the past 10-15 years. I also don't like either TSL or PP. To me, though, Pixar Pier is worse because it takes a significant and the most iconic section of the park and re-themes it to something that weakens the overall cohesion of the park. TSL, on the other hand, is on land at the back of DHS that wasn't being used for much of anything. The park itself is already such a jumble of IPs loosely connected by the theme of "Hollywood Studios" that shoving one more in doesn't add much to the park, but it also doesn't detract all that much. So, in part, this comes down to DCA currently being a better park overall.