There's still a lot of life left in the Nintendo DS, but even as we see all kinds of new games for the system some people are more interested in yesterday's greatest games making a reappearance. People such as Racketboy, for instance. He's put together a Nintendo DS wishlist of classic games that should come to the DS (including my ideas for a Wario Land compilation and New Super Mario Bros. 2).
MattG at Press The Buttons also had a really great idea for an original DS game that would serve as a follow-up to the very popular New Super Mario Bros. But instead of continuing with the traditional Mario gameplay, Nintendo would go back to the Super Mario Bros. 2 (Doki Doki Panic) action, complete with turnip-throwing goodness.
Would it be quite as successful? Possibly not. But I think Nintendo is currently in the position to take some fun risks with some trademark franchises that could give the gaming community something new to talk about.
I love his idea of Metroid II: The Return of Samus and Super Metroid getting revivals, but something I know I'd buy (yet again) would be a Sonic Mega Collection type of port for the DS. I'd be perfectly happy with authentic and accurate versions of the first three Sonic the Hedgehog games from the Sega Genesis days plus Sonic & Knuckles. Those four games are Sonic's finest adventures, so being able to play them on the go would be sublime. I can do without portable ports of his Master System or Game Gear travesties. Price it at $20 and it'd sell like mad. Of course, I said the same thing about Sonic the Hedgehog Genesis for the Game Boy Advance and we all know how that one turned out.