Pokemon Card DS presumably wouldn't be a remake, but a sequel with about a 1000 or so (I believe that's the average for Yugioh DS games) cards to create decks with. Essentially a Pokemon Card DS shouldn't be considered a "remake" anymore than Ruby and Sapphire are considered "Remakes" of Gold and Silver.
If it were just a remake of Pokemon Card, I would fail to see the point. Especially since the three expansions in Pokemon Card have been out of print for nearly a decade.
As for remakes, I objec to a remake every single generation for no reason. But if Gen V were to pull a Hoenn and only include half of the obtainable Pokemon within it, I wouldn't object to a GSC remake THEN. I just find the prospect of a remake for this generation entirely superfluous, aside from people who want to see new Morty Sugimori art or something.