That is a good point. The one thing that always bothered me about ES, is that there is no player choice other than "See scene" or "skip scene", and to me, after the first 20 characters or so, all the characters tend to run together in my mind, so I have a hard time remembering who I am talking to, barring the core characters.
However, Illusion models have come a long way, with some clever modding. Have you seen Pale Carnations, Eternium, or Ripples? Yes, you can see the Illusion model characteristics, faintly, but they are a huge improvement over what we see in Ecchi Sensei.