I would find a lot more use in potions and consumables if I could distribute them to other people easily without having to go through the hassle of mailing one item to each one. That’s why I’m propositioning adding recipes that can transmute a set of normal potions(5) into one AoE potion that will affect you and 4 of your closest PC allies on use.
I would also suggest this feature for transformation tonics, with the restriction that those allies have to be in your party and in the same map, as you, or in one of the non-combat areas. It would be fun giving people a Moa transformation in LA, and since you can’t really troll others with turning them into an animal in mid combat, you shouldn’t need the party requirement for cities.