My biggest question is this: what's going to happen with our 3rd class slot? I've seen for months, ever since TDB was about to drop, that we would be getting a third subclass. I'm extremely excited about this as I use the Hunter and don't have a void option. I'm very interested in seeing an option for this, considering the different enemies and their weaknesses that can't be taken advantage of as a Gunslinger or a Bladedancer.
A third subclass has already been confirmed to be released in either the House of Wolves or Comet DLC. Hope this helped.