The closest thing to great melee combat in a first person game is in Condemned. But the Wii isn't really able to do good swordfighting, for the simple fact that people will expect some sort of realistic, visceral experience when they'll actually get a simple, remedial slashing thing that has no feedback, which takes away the most basic part of combat in video games that dates back to Mario. The fact that it seems like you actually hit something.
Wii can't have that.
Wii can't have that.