Taloc Forest, Inggison has Magical Aether up to lvl450. I cannot find lvl475 in Taloc Forest.
If you go to where the Trico horses are for campaign in Conqueror's Ravine, Inggison, there are lvl475 Magical Aether gathering nodes in a lot more places than those I have marked on the map.
I flew to the Eastern end where the design shugo spawns on the ravine floor, lvl475 nodes located about half way up from the ravine floor.
Tidal seafoams always in the way, no problem if you are lvl65.
Remember to buy Aether Extractor item from supplies quartermaster.