my opinion:
wii: keep sold out, needs the retail hype to go for one more year. keep doin the same thing otherwise. nintendo is executing their plan.
360: get a casual audience. doesnt matter how many halo 3's it has, it needs at least one big casual hit that's exclusive.
ps3: get the hype from the games and tease a price cut. sony needs to get solid sales this holiday, but they need to capitalize as mgs4, kz2, and gta 4 come out.