They will replace the others buttons with motion-sensing at least.
Making a game on Wii without taking advantage of the wiimote is senseless(I am not saying that the wiimote is better for this game), I am sure that nintendo will do right on the controls.

PS Vita and PC gamer
CPU Intel i5 2500K at 4.5 Ghz / Gigabyte Z68 Mobo / 8 Gb Corsair Vengeance 1600 mhz / Sapphire HD 7970 Dual X Boost / Corsair Obsidian 550d







