This is a very cool project, like it a lot.
What about changing the current playfield color palette to darker tones and gradients to give it a more evil feel.
I also wonder what it might look like if the graphics were updated a bit for a newer look and feel.
The original artwork just screams 70's to me, I know, I know this pin was originally made in 1978, but there is no reason it can't be updated without losing the original flavor.