Nemesis Destiny
Adventurer
Unless of course the DM says extended rests (or whatever they're calling them) only happen in "safe" places like settlements or whathaveyou. I see it as one of the pacing dials that can be tweaked.Now, in order for the encounters to be challenging on the day scale, you need to use a more difficult, or at least more random, list of monsters, because at that time scale you have to assume that the PCs are fully rested.
On that kind of scale, a weeklong journey would generate up to 7 encounter opportunities (not all of which need to be ones with violent, resource-depleting solutions). Not too out of line from an adventuring day done in a 1-hour scale.
It makes sense to me, and hopefully they will be more explicit about labeling the dial part of extended rests than they were in 4e.