Is this a question? I see no question marks.
Well for one, if 2008 shows anything it's that they don't need "big games comparable to Smash, Zelda, Metroid or Mario". Nintendo coasted great on Mario Kart and Wii Fit the entire flipping year.
For 2009/2010, I think Nintendo will put out the following: Kirby Wii, WiiSports Resort, WiiFit Plus, Pikmin 3, Metroid Prime Trilogy, half a dozen New Play Control titles, a Pokemon Stadium-type game, Sin & Punishment 2, and maybe somethings unexpected like another Fire Emblem, Pilotwings, Battalion Wars, Donkey Kong, and/or Golden Sun games.