i'm surprised to see third party LAN support so soon, but not quite surprised it's Sega. At risk of starting a plague of needless worry, i don't like the trend (yes, two games creates a trend) of games not allowing more than two GCs to connect. Part of the advantage of a LAN in gaming is that everyone gets their own screen. Unless you're playing a two player game over LAN, someone is going to have a splitscreen. And while i'm sure there'll be some of you who'll cry out there's nothing wrong with that, i can't help but feel shortchanged.
Kudos to Amusement Vision for embracing this feature.