Thats a great idea.

I never used the light spell or a torch in any DnD computer game.

The Witcher 1 had some very dark areas where you had to drink a potion of darkvision to find the way.

It would be very nice and immersive if the darkvision feat would finally have any meaning.
So with darkvision everything looks black and white while characters without it and without some other light source would always have disadvantage with their action while enemies have advantage over them. You will likely be surprized by enemies or traps in the darkness.
Maybe some creatures flee from your torch while others are attracted by it.

I liked the thief games: stay in the darkness, avoid sounds, knock out enemies from behind and hide their bodies.

groovy Prof. Dr. Dr. Mad S. Tist groovy

World leading expert of artificial stupidity.
Because there are too many people who work on artificial intelligence already :hihi: