While it was far better (and thanks for the pointer to Cathode!), I figured out what the problems are. First (and probably most important), the lines being outp

While it was far better (and thanks for the pointer to Cathode!), I figured out what the problems are. First (and probably most important), the lines being output don't touch each other, so there are horizontal gaps across the entire screen. Second, the glyphs are much thinner, reducing the feeling of "wall".