I’ve said this a few places already, and MissCheetah has largely already summarized those points, but I’ll reiterate it for visibility.
We’re definitely, totally, extremely aware that Demon Hunter and Necromancer need help. And we want to do that right. The class sets for those two classes simply weren’t ready yet, and these ones were. Sometimes, that’s just how the production timelines end up working out, and it’s much easier for us to focus on 2-3 classes at a time rather than trying to spread ourselves thin across all 7.
I do think both classes need more attention than just their class sets; I don’t know how fast that process will be, or when precisely it will happen (nor the specifics of what we’ll be doing just yet). What I do know it’s very much a constant discussion, and we’re always reading and hunting down feedback for a variety of changes, whether they’re for right now or earmarked for the near future.
So what can you do right now? Theorycraft! Throw out ideas of what you’d like to see! Build out your criticisms (preferably constructively), and start a discussion with other like-minded folks! We visit the class forums as well as General (though we tend to post there less as our interference often derails discussions, and we like seeing those thought processes continue organically).
We will get to every class. But it’s going to take time, and we’re probably going to continue to rotate through and circle back when things need adjusting (either up or down). Our main focus right now is adding in all the new class sets and supporting them appropriately, but in the long(er) term, additional balance changes to existing builds are certainly within scope.
Very realistically, though, it’s just not going to happen all at once.