The most interesting part of that video is the location of the walls which give a lot more space to expand out into eventually.
Source: http://www.behindthethrills.com/2017/04/construction-walls-go-up-for-super-nintendo-world/Now normally seeing construction in a parking lot isn’t that interesting of a find but it’s placement that is a tell tail sign. It’s right between the waterworld show, Jaws, and Harry Potter. Space to grow if you have mushrooms. [...] Because this is where the Super Nintendo World section of the park is supposed to be before 2020. I’m sure Universal will have more big plans for this place in the future. You can get an even better look at the construction in this video.