Undead are... Un-alive [variant, monsters]

[Miles Invictus]

A scattered skeleton is helpless, right? Instead of keeping the bones scattered, why doesn't the fighter simply perform a coup de grace, which just so happens to be an auto-critical?

By the way, you can make bludgeoning and positive energy effects useful against skeletons again, by making the following changes:
Skeletons have DR/bludgeoning or positive energy equal to their hit die (minimum 5).
Skeletons are particularly vulnerable to positive energy. Any positive energy attack is a critical hit. If such an attack does not normally allow for critical hits, it is counted as a x2 weapon. If it does allow for critical hits, then its multiplier is increased by one.
Skeletons are only killed by critical hits that do damage equal to or greater than half their hit die (minimum 5).

ETA: Looks like someone else picked on that first bit while I was offering suggestions on how to make bludgeoning weapons useful again. I should've seen that coming, honestly.