There have been discussions here before about the day/night cycle, or rather the lack of one. So I won't talk a lot about it here, yet it is important to consider a day/night cycle when talking about exhaustion levels. I think a BG game that centers around survival, as has been stated by larian multiple times, should absolutely feature the exhaustion system of D&D 5e.
In my opinion, this would reward resourcefulness and planning, and make the game more immersive due to the threat of the tadpole, that could theoretically kill us any minute. This way players would need to weigh their options: rest and risk transformation? or don't rest, receive a level of exhaustion, but don't waste time with resting, which in turn would risk transformation? (i realize there isn't really much sense of urgency in the story at the moment, but one can hope they adapt and improve?)
(for those who aren't familiar with the exhaustion system: its well explained here
https://roll20.net/compendium/dnd5e/Conditions#content)
To implement exhaustion, a day/night cycle is not essential of course, but it would definitely increase immersion.
What are your thoughts on an exhaustion system as it exists in 5e?
