Ok, it's not exactly a new idea, but kudos where it is deserved; in terms of major case vendors, this is one of the first to Flatpack the case.
I can see a possible new trend moving forward where cases are no longer built by the manufacturer as a single sku, but actually piece by piece ordered by the customer from an array of parts (of course some ready combined pieces for the users that couldn't care less).
by far nothing new or remotely the first and tbh a very basic case, while a good thing to protect the case and panels, this has been done many times and far better.