@Drag’n Drop item between chars: That is already implemented – at least partially. You can drag an item into an empty(!) slot of another char; then your char will walk to his position and transfer the item to that slot. You cannot use that to add it to stacks though (which would totally make sense and is already on our to do list)
Also, this transfer feature is sometimes still a bit buggy; at least visually. And I think once, I somehow duplicated the fire axe, although I don’t know how I did it. Hopefully we will fix that before any of you finds out… 😉