Please add more people to the class balance/skills team, and fix the obvious, glaring issues many classes have. Adding new content is nice, but if half the classes don’t enjoy their characters, they’re not going to enjoy going through new content with those characters.
It is in your best interest monetarily to fix broken classes and keep those people playing (and hopefully paying). If you continue to ignore the obvious class disparities, people will either all switch to warrior or quit playing.