There's a difference between once per day andThe long rest does have a once per 24 hours limitation built into it. Are you saying that tends to prevent the 5mwd in play when there's a goal in front of the characters?
- A wizard must choose and prepare her spells ahead of time by getting a good night’s sleep and spending 1 hour studying her spellbook. it did not also recover all hp
- A cleric must choose a time at which he must spend 1 hour each day in quiet contemplation or supplication to regain his daily allotment of spells. Typically, this hour is at dawn or noon for good clerics and at dusk or midnight for evil ones. Time spent resting has no effect on whether a cleric can prepare spells. it did not also recover all hp
- A sorcerer... "daily" or I'm overlooking something. it did not also recover all hp
- A paladin prepares and casts spells the way a cleric does. it did not also recover all hp
- A druid prepares and casts spells the way a cleric does. it did not also recover all hp
- A ranger prepares and casts spells the way a cleric does. it did not also recover all hp
The kicker that really tops it to ensure nova>chill & rest>nova didn't work but does now is that you only got back a couple hp/day so you couldn't reset the clock on your hp each time too & if the bad guys came looking for those jerks playing hit & run the pain would stick with the party even if the players succeeded in fending them off. The different parys worked in combination to make the 5mwd unattractive. In 5e waiting around for the day to end has a very low opportunity cost or risk & that can border on zero with spells like tiny hut