ALCHEMY:
Just a couple of suggestions. Mainly it just feels like there's not a lot for casters aside from mana potions.
Elixir of Intellect
Reagents: Liferoot, Goldthorn, Leaded Vial
Use: Increases Intellect by 12 for 1 hour.
Notes: There's a large gap between Elixir of Wisdom and Elixir of Greater Intellect. This seeks to remedy that.
Elixir of Lesser Shadow Power
Reagents: Grave Moss, Stranglekelp, Leaded Vial
Use: Increases spell shadow damage by 15 for 30 minutes.
Notes: Serves as a lower-level version of Elixir of Shadow Power, available at similar ranges to Elixir of Firepower and Elixir of Frost Power.
ENCHANTING:
Weapon enchanting is basically all just Beastslaying and Striking up until you reach the end-game enchants. Why not add more low-level stat enchants, like Lesser/Minor Spell Power/Healing Power/Strength/Agility/Intellect? It could also provide cheaper alternatives for max-level players who can't quite afford the top-end enchants.
It'd also be nice to have a few craftable white-quality wands for us casters who are doing Vagrant/Craftmaster challenges.
SURVIVAL:
The Survival rework in 1.18.1 just sucks. Not your fault, that's on TurtleWoW, but it still needs a lot of work.
Allow Simple Wood trees to only require 1 Survival instead of 5. Reduce the dependence on vendor items, make it so Survival is more about living in the wilderness and being able to work with whatever materials you can scavenge. Perhaps have trees drop vines that can fashioned into simple rope, torches that can be crafted from wood and cloth (higher level wood/cloth crafts better quality torch off-hands), salves crafted with leaves and various other random drops. Also just generally reduce the amount of reagents for most recipes to be more in-line with other professions. As it is right now, Survival is a major pain in the ass to level.