Interesting collaborative feature… though not very serious(*), because it did not help these users realize the great waste of solutions (binary/viable glyphs) after they adopted their baseline rule (y-1). I mean, you can count only a limited number of glyphs that (should) use the bottom row, here, out of the 94 in US-ASCII for instance. The outcome is a good set of 3x3 characters forced to align in a 3x4 matrix (with a quite less readable / useless 2 x-height rule), which is not the good way (since all the compressions work the reverse way, i.e. they lose info logically, instead of stretching illegible virtual glyphs, of course)…

* In this case of collaboration, who decided which rule was prioritary? (I needn't be answered.)

I honestly have no memory of any of this... looking back on it it seems like it was really annoying, both for me and for everyone else involved...