Let me start off by saying, I am one of those die-hard Blizz-Like cats. Buuuuuuuut there are two things currently on my mind that do not fall into the Blizz-like category, but seem to be good changes regardless.
1. Shooting/casting through trees. I am playing a ranged class and still find this to be annoying. I would like any obstacle that would prevent you from shooting through it based on logic, be implemented as such. I understand this topic carries with it much controversy and I would be more than happy to read your arguments for or against this change in the reply suggestion below.
2. Working Orgrimmar Valley of Honor Arena. This should have been done in retail, this was planned to be done in retail, yet Blizzard never got around to it. This should be done here. Please place your arguments for or against such a implementation below.