I'd like to see an option to disable the game automatically adding every scroll, potion, arrow, grenade, bedroll, etc to the hotbar. I get it works for newly learned skills from eating flesh or skillbooks but I keep finding so much stuff that just clutters the hotbar up in no time and it's quite annoying to have to drag 'em off there every time.
Not to mention dragging them to the ground will just drop 'em anyway, causing you to have to pick em up only to have them appear on the bar again.
I know there's a mod here
that adds this function in, but nevertheless it should be a full-on feature at least on release.