Sorry to interrupt this conversation but I wonder: could you not simply use the / label and then have a comment in one of the existing columns, a column that is width restricted so that a large amount of text doesn't affect alignent? You can then use the special edit mode (C-c `) for long entries to see the full comment.
-- : Eric S Fraga (0xFFFCF67D), Emacs 25.2.50.1, Org release_8.3.6-1184-g29830f
