You can do all that now, in regular wow. In fact, all of the lower zones are much improved.
Leveling in Classic was pretty horrible. It had some real problems in that department, like they only put in barely enough for you to get to 60 with lots of drudgery. Then it is like they said, “Meh? People can obviously get there, so we are done!”
I honestly can’t wait for the threads, once it exists.