Trash
Pointing and laughing.
Whenever you extract an ingredient from monster, it should be automatically be broken down into their base elements like Aether, etc.
It is also really difficult to loot when there are a bunch of corpses around. I noticed that sometimes clicking on some remains will make Geralt go to the other side and start looting from a completely different place. I assume its because of body parts. It would also be a LOT easier if you could click on the "Remains" sign instead on the actual remains.
Nah, these suggestions would really take away from the feeling of the game. It's an rpg, not a diablo or hellgate clone.