When at a pond drinking, or eating out in the wilds somewhere or anything really that starts an animation of some sort that requires your hands I really think the animation should be able to get cancelled by just moving.
Far too many times now the option to cancel the animation does nothing and I end up getting hit by a zombie that I saw coming and was helpless to do anything about it.
I'd say this would be a top priority in terms of gameplay, perhaps not in temrs of the overall development of the game itself but for me it should be addressed very soon.