The thing is, if you give the assassin and healer stronger abilties it becomes overpowered. Just imagen if you could toggle between Malfurion/Jaina or Rehgar/Kael'thas, that would be completely broken. The healer and assassin are plain because you already have 8 spells available at start and the strenght comes from the toggle healer/assassin. Making it possible to adapt at lots of situations what isn't possible with just an assassin or just a healer. Also it is the talents that makes the...