Oh, the adventuring day. This has been a problem for a long time now. In 3E, just about every town had vending machines with spell in can that shot the adventuring day to hell. 4E really blurred the lines with ADEU, but at least tried to keep the adventuring day theme going with healing surges (god that name....). 5E sort of split the difference, but now has the odd 6-8 encounters a day so that short rest classes can manage their resources.
I do wish more thought would be put into the adventuring day and how the system works. To me, that means getting rid of encounter powers, and stopping the bottling of spells. Though, its more likely in the future they will go the PF2 route and just blow up any concept of adventuring day at all. Future seems to be balanced around before and between encounters.