Since I'm a mecha head I would have added Getter Robo and Mazinger Z and their respective movies. I think american kids would have been responsive to super robot shows like this since Gundam Wing cleaned house when it debuted on the programing block.
I wonder if the 2002 Hunter x Hunter series could have been brought over too.
did Yu Yu Hakusho ever play on Toonami? I know it played in the very late night/saturday Adult Swim anime blocks. I would move it earlier into Toonami.
Don't remember it on toonami, would be a good fit, I remember renting the movie as a kid.