Such a wise decision by the Oriental Land Company to push back on the presented "Disney Sky" idea of Marvel, Star Wars and Pandora and request this build instead. It's such the cute and novelty factor that is so much of their vision and motto for the parks.
Hopefully when the land is completed they will officially announce that Mickey and Minnies Runaway Railway is also coming to Disneyland which is rumoured to have been a big yes from OLC at the test stages of the ride in Florida.
Also if Disney pushes to change the Splash Mountain they may also push back and may suggest Alice in Wonderland instead.