Originally Posted by
Ielenia
I honestly don't how an approach like this would work. Currently, 1-10 levels is the level range of the starting zones, so going by today's XP requirements to level up, by the time you're done with your starting zone, you're good to go to Outland or Northrend.
The only solution, for your idea, is to make the leveling speed incredibly slow, like one level per zone, so you at least see roughly 10 of the 38 zones in the "old world", i.e. Kalimdor and Eastern Kingdoms. Which I, particularly, would not find fun at all.