I really enjoy the gathering and crafting side of this game and feel that it is quite well balanced. The one thing I would love to see added is an in game guide for the gathering skills, like there is for the crafting skills. The crafting skills provide menus for the recipes at various levels and I would like to see menus for the crafting skills showing at what levels you can gather certain materials, as well as recipes for many of these skills which require an element of crafting.
For example skinning has tanning recipes, farming allows you to plant different seeds as you level up. It would be nice to be able to see what levels are required without digging around through the crafting recipes or buying seeds, etc.
This is obviously more for beginner players who are not familiar with the recipes and level requirements however I do feel it is an important feature.