The problem is how to balance encounter vs daily resources, how is the average encounters per day? Then we can balance the daily, encounter and round damage expectations per class.
DM Guidelines page 12 says:
"The Adventuring Day
When you’re designing an adventure, you rarely have the ability to predict how much or how little the player characters will accomplish in any given stretch of time. As a rule of thumb, you can figure that the characters will probably get through four average encounters, six or seven easy encounters, or two tough encounters before they have to take a long rest."
But i don´t see this much in practice.
I´ll appreciate your help in this subject.