That cover is just disgusting and immature - a cheap shocking trick - although offensive to some people. That...anti-motif was already seen in several horror movies.
To the topic: Scarsick's cover is horrible, hands down. When I saw it for the first time on PA, I scrolled the page immediately
Off the topic again: National Health's debut cover is spooky as well.
This is my all-time most horrifying cover:
Laibach - Sympathy For The DevilNo skulls or decomposing corpses, no fetuses or Satan.
Just a picture of Shiny Happy Family - but in Nazi-propaganda style.
It's not the content of the picture, it's the implication and threatening that scares me.
Maybe it's just me...dunno, It sends shivers down my spine every time I look at it.