Remember in MARIO PARTY 7 there was an 8-player feature. Maybe they could bring that back again for MARIO PARTY 9. Maybe one person could use the wii remote and the other uses the nunchuk. What do you think?
Yes they could do something like that but the nunchuck could get a little limited. Although it could work since both the remote and nunchuck have motion sensing, the Z button can be the equivalent to the A button, the C button to the B button and the Joystick to the Dpad.
Make the wiimotes as player 1-4 and nunchuk as player 5-8...
Like SZ said, it might be a bit hard/limited for the nunchuk players, but it might be a good idea.
I'm not sure about this...