Guys.
The reason there's no Day/Night cycle is because the day/night cycle is tied into the resting system. Because you're supposed to have to rest in order to progress since your long-rest-recharge abilities are supposed to be important.
There's a reason its called the 'five minute adventuring day'. The fact that the game currently doesn't force you to rest often to keep your abilities charged is a balancing issue.
Having a day cycle would only reinforce this.
