Crafting item Specific Mobs Need more spawn points

While I understand the need to create an economy for players (supply and demand) and that Levequests will occasionally grant it, I think that mobs that are needed to drop certain materials, like fleece, need more spawn points/more mobs that drop them.

It's unfair when a player wants to gather the item only to realize that there is a lone level 50 basically claiming all the adds, making it impossible to farm effectively. I dont want to waste all my gil trying to get materials and it's unfair to say "well, then just raise a job to 50!" when I find the crafting system enjoyable to do. It seems very limiting in ways to play the game.