So, this a great mod idea.
but, the issue is that this mod REALLY hurts performance when you have man colonist/animals.

The unveil and collapsing of the fog is too much going on.

Iv messed with the settings, and dont see this feature, so my suggestion:
-Make an option for the areas revealed to STAY revealed. with no 'shadow after reveal' effect
--under this, you can have different items being made to stay revealed or hide again