I'm not really sure what's good in WoD, but I have a few options to boost. I also was thinking of boosting a Warlock from 1-90 and not caring about the veteran bonus. Right now I'm leaning towards Druid, Mage, or Warlock.

Just pick one you would like to play
Both chars can be good both in pve and pvp if you know how to and like to play it

But i'd choose rogue cuz thats fit my style

Mostly I'm curious if it's even worth boosting a level 70 for the 20 levels and professions, or if I should just 1-90 a character.