I think one of the reasons why the eyes appear comparably small is because we´re used to see depictions of Mesonychoteuthis with totally exaggerated eyes. Those of the life-sized model which was made years ago for footage in a pool were for example way too large. That´s why I tried to use not any models or existing drawings (except for anatomical detail drawings of the arms for the sucker and hook arrangement) as references but focused soley on photos of real specimens, especially the fresh ones. If you look at them (like the big one caught by a Russian trawler, the 495 kg specimen and the one which was hooked and videotaped on a hoki line in 2015) you can see that the eyes are by far not as protruding and bulging as depicted on many illustrations. The same applies to Architeuthis as well btw.