Bauer Bodoni, working with counters and line contour, some work better than others, and like most of the other experiements, I have had struggles defining the more geometric letters such as 'l', 'j', and 'i'; however, this may easily be resolved when working with interaction in context.
Color coding to visually show relationships of form.
Working with a pre-defined shape and how it interacts with the knocked out letter.
Working a previous study in context.
Why I am using "hamburgefonts"
I plan on re-working some of my previous trials to see if any interaction surfaces.