This is a great mod. I can't even think of how it could be scarier. There are only a few things I think could use some improvement.
Most lights use the glow effect in addition to the light itself, so when the lights around you go out there's still a bunch of bricks glowing in the dark. If you could detect whether or not a brick is glowing, or a point light's brick is glowing, you should remove the glow when the lights go out so you're completely in the dark. Also,
- Safe Baseplate
Since you're planning on adding a safe zone, could you make this work with day cycles? Imagine being safe one minute, then having to prepare for this thing the next...