Upvoted for the likelihood of producing interesting conversations on HN. But fundamentally this Recto language looks 1D, not 2D. As IsTom said below, it looks like "braces/parens with extra steps."
If there were any actual "in-game effect" of the rectangles — e.g. a "rotate rectangle" primitive that would change the order in which atoms were evaluated; or some meaning given to overlapping rectangles as in OgsyedIE's comment — then it would be much more interesting, because it would no longer be exactly isomorphic to Lisp/Scheme.
If there were any actual "in-game effect" of the rectangles — e.g. a "rotate rectangle" primitive that would change the order in which atoms were evaluated; or some meaning given to overlapping rectangles as in OgsyedIE's comment — then it would be much more interesting, because it would no longer be exactly isomorphic to Lisp/Scheme.