Part of the reason I wanted to to make the app is because _I actually do like fullscreen apps_. Or at least maybe I learned to after they took away the grid. In any case I certainly wanted this app to work with them.
As a fellow fullscreen liker (there are dozens of us! dozens!), this looks quite intriguing to me. A grid layout always fit better with my mental model of how these types of spaces should work, since I could use rows as categories of work and columns as specific applications within that category. Or one of a few other mental models I've used over the years.