I am fine with 5e being more vague, and not providing a set list of skill DCs for everything.
That said, the two things I would have liked to see more is:
1) Some more high level differentiation. Its completely possible for level 5 characters to hit DC 30 checks (aka the "top tier" skill checks). Beyond that, it becomes a little more frequent, but ultimately 20th level characters aren't doing anything "more epic" just "epic more often".
2) Some more examples of DC 35 and 40 checks. My level 10 characters hit these numbers a lot (guidance + bardic inspiration gives you a BIG boost). So I would like to see some examples of what is being the DC 30.