1) The coordinate of consent brings to my mind the use of trackers and cookies on websites. It is now possible to reject the "non-essential" ones, but most websites don't make it easy. Additionally, most people (including me) don't really know how this sort of tracking works, and therefore can't truly consent. I'd also like to discuss the coordinates relating to visibility further.
2) One of the disadvantages that strikes me is actually from a quote in Lavater's 'Of the Advantages of Physiognomy' section. He states, "nor can friendship discover a more solid rock of foundation than in the fair outlines, the noble features, of certain countenances" (pg. 44). This quote sums up for me what I was thinking while reading Lavater: that physiognomy focuses far too much on external features and uses that to determine internal ones, without using other methods of exploring internal features.
3) Between pages 210 and 211 are two plates which depict various animal skulls, the section is called 'On the skulls of beasts'. Specifically, plate 'XXXI' compares the skulls of herbivores and plate 'XXXII' compares the skulls of carnivores.