I think it would be really neat to see some new metals in the future! New gems and mining themed rares to pluck from the cave dirt or the mountainside! Make some super rare metals and tie them to imbuing or just simple crafting. The ideas are endless. You could put the ore spawns into dungeons. IE: Fire Ore Silver Ore Etc... I wouldn't mind seeing more of a variety of leathers and wood either. It just seems right now, that unless you are a spawn god who wants to camp the Abyss 24/7 that the resource gatherer of old is now a tamer or warrior! Not someone with a shovel or axe!