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 they have Bleach? I'm pretty sure I watched it on Crunchyroll when it was still an illegal free fansub site
I think it was on adult swim, not toonami.