With each new expansion, we receive new materials for our professions, but unfortunately, old materials become obsolete, and many zones are neglected, which is truly regrettable.
Revitalizing these old materials in new content would be beneficial. Combining materials from various expansions to craft new items, or merging old with new materials, could be a solution. These resources are available, auction houses stock them, and we have an entire beautiful world that is underutilized.
After all, it’s World of Warcraft, not Expansion of Warcraft.