I feel like the poor paper trees are somewhat neglected. They have so much potential, but the skill tree only has a single skill dedicated to taking notes and writing teleportation scripts.
I would like to see an expanded system of drawing/writing. Have a scribe make glyphs for different buffs or cosmetic effects like sparkle trails or similar goofy stuff.
I would also like to expand the mailbox system to mail cute stationary. Maybe have a stationary fairy show up on one of the maps randomly to drop paper or colored inks.