Despite me wanting to avoid any discussion on Shurikens.
Adding Synergy Recipes for Shurikens would not be all around awful. as Synergy can give you 1, 2, 3 stacks of an Item if you synth HQ~3. This would help a lot in the production of maybe the Amnesia/Silence Shurikens.
I won't touch much further in this >.>