I also can "see" in my dreams! Aphantasia is so fascinating to me because it helps me think about all these senses in much smaller units. I think the more we study and learn about aphantasia the better we will understand the brain in general. It is kind of like a natural experiment where you can remove one piece of the system and reason about the whole because of what changes.

For example, I had never considered that there would be different processes involved with imagining something visual vs recalling it but now that seems super obvious to me! I love when something tweaks my perspective and suddenly a new world of possibilities is revealed.