Not sure I won't say something stupid...
But is it complicated to create a cosmetic D&N cycle which follows the number of rests ?
Long rests are always at night so...
After a long rest => it's always the day
You take a short rest => it's always the day
You take another short rest => it's always the night
You take your long rest => new cycle
It's not that it's stupid", as much that it would miss the point of what's the supposed "design goal".
The goal would be precisely to NOT have a rest that is always at night, but to have a dynamic passing of time.
Also, unless you go for "grit realism" optional rule (a long rest is a week and a short rest 8 hours) the basic ruleset predicts a long rest to be 8 hours and short rest to be 1. Which makes pretty damn weird to have night and day cycling at any single use of the latter.
Not to mention unnecessary, when you would have an option to "wait" for a certain amount of time anyway.
