I'm not sure if this feature was mentioned in the guild hall update but here it is.
How about a little box in the guild hall (isn't universal someone else can't go in and take) that basically holds materials that you waant to hang on to for crafting something later, the reason I suggest this is becaause I'm one of those people that just goes on the Ah and sells all the mats in my box except the expensive ones I know I need like a dragon scale..
So basically it would also account this box when looking up recipes in the ah for mats but for everything else it wouldn't be counted so you don't sell it. And I'm only suggesting this because I'm not sure if the guild hall is going to have one but even if it does are these mats being used to create furniture? So that why I want this seperate mat holder box.
Isnt it....unnecesary? Just control yourself and dont sell it.
And if it's something personal, it shouldnt go on GH.