Personally all balanced don't cry rangers can catch stealth rogues others get a skill which stops skills. Shaman got shorted only because of timing but is great skill for many uses.
barbs got to charge which is a class spedic skill in many rpg with shields good first move.
Like I said all balanced wait for new skills for overpowered class cause right now none are except those veteran players who are just that good with best gear, remember gear and runes/crystals properly setup on vets is why you think many overpowered class for whatever class