Death Rattle - Like the zombie moan, but different text
Pile of Bones - Like Play Dead, but different text
Terrible. I'm Skeleton #1 fan but you can't just change text.
I'm thinking Death Rattle - Spooks nearby enemies in 3x3 radius with eerie rattling. XX% for them to scream in terror, revealing their position.
Pile of Bones - Skeletons become a pile of bones, similar to zombie hiding, except instead of being displayed as "a corpse" in the tile description somewhere it says "bones are strewn about here". They can be searched for as usual, but if a player simply walks through a square they're on, when they try to leave "a bony hand latches to your ankle like a vice as a skeeltal figure forms before you" and you get attacked for a decent amount of damage. Of course this then reveals the skeleton.
When I get home I'll post my skeleton manifesto, just you wait