Its fun, but agonising the way im doing it (some scrubs would say its the wrong way, but I aint in a hurry).
Basically Im restricting my characters to certain groups of zones, and boy does it leave me at lose ends the way blizz fucked up increased xp, and I cant turn it off as I then get screwed on battlegrounds and being limited to a choice there.
The fun challenging side though is having to figure out my zone progression without it suddenly involving STV for them all