I agree with the majority of your post. I don't personally have a problem with #4 however. I feel I move just fine in battle the way it is. It could use some tweaking for faster side to side movement, but moving backwards just as fast as you run forward wouldn't make much sense. It is a little too slow however so perhaps they can tweak it a little. The stopping animation honestly hasn't effected me in battle either, but I wouldn't care if it was removed.

Personally I feel the bigger issue with fighting groups is more due to the still horrible targeting system and less about the movements. For the most part grouped mobs are pretty close to each other.