You make an excellent case as of why you're dissatisfied, and I have no intention to change that.
I just feel It's never going to be changed to be what you desire, in any way, shape or form.
Questing was more difficult back in vanilla, because once you had leveled, you were done. There were no endgame back then. But patch after patch, that changed, and peoples attitude changed towards questing over time. It was no longer the challenge. It's now the device that drives the story towards the endgame.
Therefore, to cater to more people, the challenge of questing was loosened.
But seeing that it take less than a day of game time to get from 50 to 60, You'll be a the challenging point of the game in no time.