All Chat was awesome!
I really want this back, I made a lot of friends with all chat and yes I also did a lot of smack talking, but its a competitive game its part of the experience and its just fun to do and for those that don't like it, there is a mute button for a reason, friggin use it.
Another thing I used all chat for was giving instructions and advice to new players on how to counter when I seen there was a skill and experience difference between us.
And when I get outplayed or am on equal footing with my opponent I like to be able to compliment them in good sportsmanship.