I just found the first single-column edition of the NABRE I’ve ever laid eyes on. Behold the Catholic Journaling Bible from Our Sunday Visitor press!
This edition has generous margins with ruled lines for notes and a beautiful single-column type setting. The footnotes are printed in double-column format in a readable sans-serif font. Overall, the finish of this Bible is nice. The hardcover has a classic feel, and the paper is smooth to the touch. There is moderate ghosting of text from subsequent pages, but the Bible text appears to be line-matched throughout. I didn’t notice any trouble reading the text because of ghosting. There are two significant physical drawbacks: a relatively small font size (I’d guess it’s no larger than a 9 point, maybe 8), and a glued binding.
I think Our Sunday Visitor could convert this from a specialized Bible to a general purpose Bible with a few changes: remove the note lines and increase the font size, keep the same type setting, and produce a sewn binding instead of a glued binding. A bible like that would be a home run!