I think that's the only way they can get away with putting our more DBZ Merchandise like that. What with games being released for the PS2/PS3/Wii/Whatever, and basically retelling the story over and over (like the previous PS3 game not giving the full story so a second game can finish that off), it'd just be really redundant.
I think if you released small OVAs where they showed the more important fights over DBZ like Goku vs Vegeta, Freeza, and all of those big baddies. That'd be nice, but having the lead ups, and what not redone as well? Big waste of time, and it'd just push people away as it's already made a ton of cash. I'd watch the main fights of the Cell Saga such as Goku/Cell and Gohan/Cell. I would not watch Goku taking his driver's license test.