Anyway, if there are a lot of people who want the ability to do this, maybe the game should have a "casual" and a "roguelike" mode instead.
How is that different from peaceful/normal? Then people would just want to change between those!
Perhaps just allow peaceful to turn on and off enemies, but never switch to normal?
No I'm not just renaming easy, I meant that "casual" could be either easy or normal, and you can switch between the 2, maybe even allow multiple saves.
In short, this is the "let me have options" mode. You have access to the light switch.
Roguelike mode would be the game like it is today, 1 save, enemies always on.
In short, this is the "I want the full challenge" mode. Lights always on.
There is no reason to switch between the 2, because casual would include everything roguelike has, if you activate them.