Founder of RWP Gallery
There are non addictive drugs that don’t cause binges in Rimworld so that shouldn’t be an issue.
Try my devilsteel mod, it makes surviving end-games at higher difficulty levels levels possible
Raids stop being a threat? Are you playing at max custom difficulty level on Cassandra?
This should be achievable by relatively simple modding. What I usually do is make way more quality meals than simple meals, and place them last in the jobs list. So only when the chef runs out of ingredients, will he start making simple meals. They can’t eat what’s not there.
You kill your colonists so you can cook them with fungus, of course
Bed rest at a higher priority than tending can lead to this
Not sure if it fits your description but the first one that pops up in my mind is Starbound