Give ingredients minimum level values.
This wouldn't be enforced in crafting (lvl1 mule can still craft all), but solely to let you find them on the auction house easier.
Right now im looking for epic scroll on khybers AH.. It has 52 pages of **** I don't need to see, and I cannot filter it in any way as every item is ML1... And there's probably lss then 1 pages of scrolls.
So give them min lvls so we can filter them please.
IE:
Misc = lvl1
Fragments/Shards = lvl2
Season event stuff (motes/etc) = lvl3
Shroud ingredients = lvl12 (same as the ML on weapons)
Epic Scrolls = lvl20