One reason I hope Nintendo continues to make high-profile games for the 3DS is because we'll actually have some traditional controls. Like, think about when we're gonna get another Zelda... In order to take advantage of the 3D, the game has to play on the top screen. The top screen is not a touch-screen, so it won't be anything like the DS Zelda games. Not that they're bad by any means, but it would be nice to go back to using buttons.
I've got to admit, I completely ignored the DS Legend of Zelda games due to the touchscreen emphasis. I did enjoy the use in Ocarina of Time, so it leaves me with hope we will see some excellent titles in the future.