Oh, named enemies will leave bones, I assure you that. A favourite story of mine involves Slob setting some traps for Danny, who just flew over them with a belt of levitation from a previous character and beheaded him in one go. A classic
I'm making this a general ideas thread. But to start, here's two I thought of.
1. Zombie corpses should turn into a pile of bones in less time they take to rot away completely. In other words, instead of taking all that time to rot away, they should turn into a pile of bones in less time. I hate having to kill zombie torsos over and over.
2. Following on from the previous idea, wands of necromancy should work on piles of bones.
3. A weapon that makes the enemy stagger backwards! Or maybe a shield.