I wish we could trade reagents like we do treasure cards. My friend needed some rare reagents for crafting . I had them and told her I would try to give them to her. We had to go to the bazaar and I had to sell them and she had to buy before someone could else could. Well she said they never showed up on the reagent screen when I sold them so she missed them. someone must have gotten them way to fast, but now she still doesn't have the reagents she needs and I gave them so someone else.
I completely agree, although I did have someone sell me some stuff in the bazaar for a crafting quest, I didn't have the trouble of having someone else buying it. But being able to trade reagents would make things a whole lot easier.