Despite DBZ Kai being basically DBZ edited down to be a more faithful adaptation of the manga, I think that it's considered a different show, which is probably one reason they went for it. Still, I wouldn't mind if Sailor Moon took Bleach's slot. It would give the new dub some good exposure and provide a bit of nostalgia for the block. I'd still kind of prefer for Crystal to be on the lineup instead just because it would be something new, while still appealing to nostalgia at the same time, but that won't happen for at least another year, or longer if Viz wants to finish dubbing the original series before moving to Crystal, so going for the new dub of the original series would be nice.
The only issue would be that it would result in another slot being locked up for a few years and Toonami has enough of those, but I could see Sailor Moon ratings doing quite nicely.
The only issue would be that it would result in another slot being locked up for a few years and Toonami has enough of those, but I could see Sailor Moon ratings doing quite nicely.