Becuase it would end up just like naruto shippuden and not be shown much. plus toei wants a basic cable like CN to air one piece not a network hardly anyone has like nicktoons or disney XD. the quistion should be why isent Disney playing naruto shippuden and Nicktoons not playing DBZ Kai on there main channels respectfully instead of airing them on there channels almost no one has?
Sure Toei Animation wants "One Piece" on a basic cable channel, but the fact that they're letting Nicktoons and Toonzai air "DBZ Kai" means they'll air "One Piece" wherever they can, regardless of availability. Well, it's not on the FUNimation Channel, but hey it could happen, it's already on their on-demand. And the reason they're airing those shows on channels less people get is probably Disney Channel and Nickelodeon didn't want them. Different channels under the same umbrella are run by different people and serve different purposes.
Disney? Hell, no. They'll edit the shit out of it.
Nicktoons, from what we've seen with DBZ Kai, doesn't do a lot of editing.
"Naruto Shippuden" gets away with a TV-PG on Disney XD, that's pretty good for "One Piece". "DBZ Kai" is pretty good for Nicktoons but they still take a show that's already an edited version of an older show and edit it more down to Y7.