one thing that helped me early on if focus on HP. if that means going back and stocking up on hSTA augs from TBM, then so be it. If you can get your whole group over 200K hp, the expansion becomes much more enjoyable. Also, if you have a bard, run your heal boosting songs. They help. It's not always about beating a mob fast. It's about beating the mob period. With all the AE's and damage shields that mobs cast on themselves, you might not be able to swarm with your melee toons as much as you'd like. Once you find a named or mission you can beat reliably, then farm the snot out of it before moving up to next level of challenge.