I know the initial concept was a theme park celebrating the culture of "California." But since that idea was a total flop with visitors, it's now called Disney's California Adventure because the park is set in California.
The shift in approach makes sense. A lot of Californians don't need to see a Disneyfied version of California. THEY LIVE IN CALIFORNIA! They know what California is like!
The context of the park is still a mess and I think the context matters.
Is this California Adventure because it celebrates the richness in diversity, the land or the people of California as the current dedication plaque tells us its supposed to? Hardly. -and that doesn't seem likely to change. Is this a unique Disney "California Adventure" full of experiences unique to this park in CA? It
could have been but too many of it's attractions have been cloned elsewhere (Soarin', Mermaid, Midway Mania, etc.).
In absolutely no way does the current mess of a park across from Disneyland work in
any thematic context and it's incredibly frustrating because at one point, it seemed like it was going to. Now it's just the, "it doesn't make sense in Disneyland so toss it into the other one", park.
I'll offer two "Armchair Imagineering" solutions to Disney:
1) Replace Grizzly Peak with Pandora (Soarin -> Flight of Passage, GRR -> Thrill ride version of Navi River Journey), then rename the park for a 3rd time to Disney's Hollywood Studios. Grizzly Peak is my favorite land over there but just rip my heart out and get it over with Disney because I know you're going to. At least in this context, park two starts to make some sense. It already shares an entrance with DHS and now each land within feels more at home (Buena Vista, Hollywoodland, MARVEL, Avatar, Pixar, etc.)
or, 2) Remove the dedication plaque and rename the park, "Disney Copyright Adventure".
Either way, just please stop pretending this park is something it isn't, Disney.