I'll try my best here....
1. I believe I saw a japenese commercial where two people were playing one on one online. 4-free-for-all has been confirmed, so I see why there wouldn't be 3 playered online Brawls.Originally Posted by Atomheart
2.Yes, there is a colored circle next to friend's names. The circle is color coded to show signal strength.
3.I'm pretty sure you will start a whole new match.
4.Lag seems to be small if any. As Spiff-ssbb stated there was a video on the dojo and it presented a good running Brawl.
5.No, it will not be region locked.
6.Because they have human intelligence. You could probably learn more from fighting a human player than a computer. And I would think it would be more fun. To me anyways. Oh and you can still taunt, just no message bubbles show up.