Now I may just be an old fart, but balance has never existed in AO. Other MMOs try to balance, some get close. Without homogenizing the classes, you can't.
AO has always done well not in spite of imbalance, but BECAUSE of it. The way a team dynamic changes by simply swapping out one class is crazy good fun. Yes, when trying to make the optimal setup, you may want 1 enfo, 2 docs and the rest soldiers... but that's not fun. So we don't do it.
My point is: AO isn't balanced, and numbers shouldn't be balanced in AO. As long as each class is fun to play in their own right, perfect.