I just don't see the point in spending $50 for a game that is essentially a collection of small minigames, which is mostly what Nintendo's been putting out for the past few years. Now, FFIV or CTDS, Those are games that have a story and valuable gameplay. Warioware, Brain Age, Nintendogs, and stuff like that don't constitute their price to me.
Well then, maybe avoid the mini-game games...? This sounds like an argument of game lineups...which, I must say, is uninformed. The DS has a great lineup outside of such games as Brain Age (which is a good alternative game) & Nintendogs...I'm looking forward to a lot of the upcoming RPGs coming for the DS, myself...There are FOUR Dragon Quests coming out (though, admittedly 3 are remakes, but they certainly look pretty enough), a port of the original Disgaea (which I never got to play), a new Kingdom Hearts game, a new Valkyrie Profile game, and, of course, Chrono Trigger...and that's mostly all just counting Square-Enix (all except Disgaea)!
FFTA2, FFIV & The World Ends With You are 3 other good SE RPGs already available for DS...
I've also heard good things about Etrian's Odyssey (which I believe the sequel is coming out soon) & the Zelda (Fuck yeah, 2D Zelda FTW!!)...
And there's always the Pokémon games...
If you're gonna emu, you should know that there ARE good games for it...Games worth buying, I think. I think it's getting just as good as the amazing GBA lineup was...