Even if there was a general agreement about how different the Toonami version is from the DBZ dub currently on DVD and Blu-Ray (redubbing of lines while keeping more or less the original cast, with only a few recasts, is not enough to set it apart IMO), there's no way that this is going to be profitable for Funimation.
- How limited would this edition have to be in order for them not to lose money? Keep in mind that it takes time and money to produce a DVD set.
- If they did a very limited edition, how much would each set have to cost for them not to lose money?
- Would they be certain that all of the copies would be sold?
- And finally: how many people, hardcore DBZ fans or not, would actually pay for this set, which would likely have to be more expensive than usual and essentially contains the same DBZ already available on DVD and Blu-Ray?
There are people who talk about it online, but remember that Funimation released the Dragon Boxes marketing them for the fans, and even in that case the sales weren't good enough to keep licensing them. The RTD Edition had an entirely different voice cast, and there was no way to turn the original Ocean dub into an uncut release, and there was a significant number of people eager to have an official release of that dub. And even with all of this, it had to be a limited edition. Every release, prior to being made, has to have a significant number of potential customers in order to make a profit.
I'm sorry to be that guy, but the real world's the real world.
That said, I could see a future release (yet another!) of DBZ, which included the original dub, when necessary, as an alternate track, in a format which didn't take too much space. But even that would have to be taken from the uncut DVDs, not from Toonami.