I'm just about fed up with all this gimmick bullshit. The touchscreen and two screens are not a gimmick, they are a new form of gameplay. Sure, its layout happens to be especially good for simple puzzle games and the like, but that doesn't mean it's a gimmick. It's just another type of game. No one ever called using a controller for Pacman or Tetris a gimmick, and this criticism makes about as much sense as that would. No, there isn't some epic RPG bore-quest out for DS that effectively uses its capabilities, but there will be. The developers have to get a feel for the system, understand its subtleties, before they can make a game like that. No game like that existed with Atari and very few on the original Nintendo because it was new then. Face it, the only reason you call those games classics is because that's what you played before you knew better. If Tetris came out for the first time now, it'd be labelled with gimmick and boring.
Many people like what the DS has to offer right now, and it will continue to offer it. But games that appeal to you and that incorporate the old with the new will come around, so stop f'ckin whining.