Guys, uh... 4vs4 is physically impossible for the Wii to accomplish. The best the Wii can do is 4 Wii remotes and 1 GC controller (or just 4 GC controllers). That's 5 players max. Check Wikipedia under tech specs.
You could technically have 4 or 5 players fighting potentially infinite CPUs, but that's not what 4vs4 is
Could the Wii be updated to allow for 4 Wii remotes and 4 GC controllers simultaneously? I doubt a firmware update could accomplish that. You'd probably be looking at a hardware update, like with the Wii model that plays DVD movies. In other words, NOT IN TIME FOR BRAWL, so why would it even matter, lol?
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