Example for mining, which expansion, What the chances are for the gems & the location you can find it (Including drop chance!)
Example of the herb, which expansion, What the chances are for the pigments & the location you can find it (Including drop chance!)
Example for milling, which expansion, From what herbs they come and what the chances are of getting it!
Example for gems, which expansion, From what ores they come and what the chances are of getting it!
Example for disenchanting, which expansion, From what gear level & quality they come and what the chances are of getting it!
This for at the bottom section; Where you can find the specific material & if they are also gatherable from specific nodes! (Including drop chances!)
Example of how it could look when enabling the icon option in the settings
