This is a natural result of Daily-heavy design. Unless there are actual mechanics in 5E to enforce standard adventure-day lengths, the exact same thing is likely to occur. 3.5 was not an Encounter-based design. It was a Day-based design. I very much doubt that 5E will truly be Adventure-based design. Sure, there might be Adventure creation rules along the lines of 3.X/4E Encounter creation rules, but if there's traditional Vancian casting, then it's really Day-based design.
The problem is that resting for a night is an incredibly overpowered action, by the rules. There are enormous benefits outlined by the rules, with negligible downside. It is left to the DM to try to balance the game, against players that have every natural incentive to rest as often as possible.
Any other mechanic that powerful, that relied solely on DM fiat to reign in, and I think most would call it a broken mechanic. But a night's rest gets a pass. I don't think it should.
I think the best way to do it is to have most daily resources be based on a point system, and for the DM to get points to spend too. If the players rest, then so does "the world", and the DM gets his points back. But since that probably wouldn't "feel" like DnD, it won't happen.