What would be interesting to me is to have an RNG system of insomnia. What I mean is: you try to lie down in a place(such as the ground) that isn’t comfortable. Moments pass, and time goes by but your character wasn’t able to sleep. It was because the place you tried to sleep wasn’t comfortable enough.
This could be determined with things such as:
-proximity to roads; if you feel like someone is going to happen upon you while you sleep it can be difficult to pass out.
-Time since last battle; if you just killed someone I doubt you’ll be sleeping steadily in the next hour. Unless you have done it a lot then I suppose your character could get desensitized.
-Imagined RNG; like a prompt could come up saying you thought you heard something or “you can’t help but feel someone is watching you.”
All of these could be mitigated with a dire need of sleep, a comfy bed or cloak, a fire nearby(animals/bugs dislike fire), or perhaps foraging for, or buying, lavender could make you more relaxed.
This might be too much work to implement, but it could make sleeping conditions something to think about if the day night cycle gets stretched out. Especially if the time ratio gets closer to 1:1 in the final version.