Okay. I think everyone agrees at the SNES had probably the best collection of AAA games on any console ever. And yes, some are being ported to GBA...but it who cares, they can get money this way too.
Now this would require a lot of cash being thrown around getting rights from third parties to publish games...but Nintendo could release a greatest hits collection, with all of the SNES's best games on one handy GCN disc. The biggest SNES games only weight in at a few megabytes, so space wouldn't be a problem. Heck, you could put the instruction manuals for each game on the disc and they would take up for space than the game. But just think about how this could sell, with good marketing and advertising. I know I would buy it. I know all of my friends would buy. Everyone I know from PS2 to Xbox owners loved the SNES. In fact, most of the kids I know say there favorite game was on SNES (Donkey Kong Country is the game I hear the most, and Super Mario Kart).
Just think of the games you could put on it. Zelda, Super Metroid, Mario Worlds 1 and 2, Mario All Stars, Final Fantasy III, Chrono Trigger, Donkey Kong Country series, Ninja Turtles IV, Killer Instinct, Mario Kart, Star Fox, Street Fighter 2, the Mortal Kombat games, and loads more.
Of course, this is only dreaming, as putting this sort of thing together would cause mass inter-publisher chaos...but it would be soooo great.
Or on a more practical scale, you could do the Nintendo published greatest hits. That would be just as good...
And hey, you could throw N64 games on as well.