I guess I'm alone in this department... while I am totally thrilled by online being officially announced I am also thoroughly dissappointed. Mainly by two things:
1. The only form of communication in game is short preset taunts (may be the only form of communication period).
This really dissappoints me. Brawl is supposed to be top tier, grade A, top of the line material... yet no voice chat. You dissappoint me, Nintendo. Hopefully this will change in the future.
2. Not being able to see or know anything about your opponents in Worldwide Mode and the matches not counting toward a ranking of any sort.
While I can see the pros to this, it's the cons that really stick out to me. You can't join a random game and go, for example, "Hey, I've seen that guy Kashakunaki on Smashboards before. This will be fun." Not to mention your friends list will be completely overrun if you try to track down every person because you have to add them to even know who they are.
The matches not counting toward a ranking in worldwide mode irritates me because... well, isn't it obvious? The only matches that count are the matches against people you probably play all the time: the ones on your friend's list, and those probably will end up being the friendliest of friendly matches more times than not. It's kind of sad. Rankings should display how you fair against everyone relatively, not your friends, and others should be able to view that in worldwide mode.
Sigh...