I recall there was a quest that involved helping a servant of herma mora, she mentioned that water holds the memories of the dead. Is this ever going to get explored more? If one could scry through the memories, all sorts of lost knowledge is at our fingertips. The first thing that comes to mind is searching for dwemer memories.
Along with that, there's also all sorts of avenues that could be discussed. Any connection of the psijics and their scrying to the water magic they have everywhere? What does it mean for aquatic critters? Fish and argonians who live in memories. What about the water cycle? Evaporation, snow and rain, clouds, humid air. What about impure water? Mud, blood, sap. Is there a relation to water's weird effects on tethers to aetherius, as seen on neloths experiment in Skyrim?
I'm also curious how it plays along with spirits. The Dunmer summon their ancestors occasionally to ask for their knowledge. We've seen plenty of other afterlife scenarios with the dead having recollection of their past. So memories are stored with the spirit, but also left behind physically on tamriel? But also still with the body...such as with "dead" like vampires?
...it's all a lot to unpack haha