I'm sorry, but I just don't think one month (January) after the holiday season is a "drought." [Edit: fine, two months Dec + Jan] Most people will have many games to play that they got as presents. Then there's The Minish Cap for DS owners as well--it isn't a DS game per-se, but you can play it on the DS.
Maybe I'm just a freak who doesn't like having multiple new games at one time, but I just don't see a problem with Nintendo's release schedule in general. Yeah, we should have Wario Ware DS sooner, but that's only because we should have had it at launch, not because there's a hole in the line-up.