Is there a good reason why we can’t right now? I’m rerolling a character that’s almost 30 and I can’t put this Ancient Heart nor this Tainted Brain Matter in the shared stash. Or the 30 shards I have saved up… Or the 50k iron bits. Or even the Scrap…
Can’t put reputation vendor items either. Why!!!..
Not being able to transfer rep items makes sense, but I’d also like to put more things in the shared stash because my hc characters keep dying haha 
So yeah, Iron Bits/Brain/Heart/Blood/Scrap/Crystals would be nice in the shared stash. Shouldn’t be too hard to change once the mod tools are released 
There are two different rep item. 1 is based on character the other is transferable (obtained when you max out rep of that faction)
Thing about HC is that your meant to have risk. I would feel adding all these to shared storage would diminish the point of making HC characters.
I agree in normal this should be available but not in HC.