This map is intended to be thought provoking and/or simply as art – it's not a real political project. But I really like things like this – I call this category of things "speculative geopolitics."
If I were doing this, I would take it another step, and imagine if the borders with Canada and Mexico didn't exist – if they were included and we could compose something taking the 96 North American 2nd order polities [51 (US States + DC) + 32 (Mexican States + DF) + 13 (Canadian Provinces and Territories)] and making them even by population or by land area: maybe 100 polities. What could be done?
Just daydreaming, I guess. Certainly not meant as a political project, either. It's just interesting.