I'd say switch Advance Wars, I don't really see that ending up being one of the ambassador games anyway, and replace it with Pokémon Emerald version. I want this because I never got to play it as a kid who thoroughly enjoyed Pokémon Sapphire version (which ended getting lost alongside a DS Lite and Super Mario 64 DS
), nowadays I've been trying to track down the game on Ebay, and I first got a game with a broken memory, a game with a worn out time chip (so I can't grow berries) and a game that restarts itself after I beat the elite four
I also think that they could add a feature that lets you send the Pokémon to the Pal Parks in Diamond, Pearl & Platinum and Heart Gold & Soul Silver, that would mean people would be able to catch 'em all without resorting to buying a crappy normal DS or the DS Lite
P.S. I agree that Minish Cap should be one the Advance Ambassador Games, it's Zelda's 25th! Let's have another free Zelda game!!