Since when did a DS slot TV tuner exist?The reason the GBA slot exist's is for GBA games. There will never be a extension for DS that would be used gameplay wise (ala, Gyroscope). Considering DS already have enough innovation. No need to jack up the price of a DS game adding something stupid like that. TV Tuner 'could've been GBA, but they did DS, why? because they dont want to make 2 versions of every little 'add-on' and kill the DS Phat installbase.
I mean...