One thing that i noticed on the spells list already:
Pathfinder 1 listed not only the name and level, but also the class availability in the header.
I would like to see this return, to reduce flipping back and forth between pages.
Example: magic missile, Spell 1: Arcane; Occult
This means that when i see an interesting spell, i do not have to flip (or scroll) back to my traditions' list to see if i can cast it as well (this is also something that D&D 5th missed)