Hello I was reading through the Kineticist class in occult adventures and noticed some of the elements had empty levels for their wild talents. Such as Aether is missing a level 9 wild talents. Air is missing a level 9 wild talent as well as a level 2 wild talent. Earth is missing a level 8 wild talent as well as fire and water.I also noticed that there isn't a universal level 7 or 9th wild talent.
I am wondering if there is a reason for this or are they planning on expanded the elements in a later book?