I guess that's true, but most of what we mentioned used the same mold. And yes, Vegeta helped make DBZ what it was. I'm surprised Toriyama didn't like Vegeta honestly, and wonder why. You're also right on how we need a version of each character available for the masses. Which I think should maybe apply to the final form of the villains as well, if we ever get Kid Buu. Even if newcomers can't get everything, getting a form of each main character should be enough since I don't think some people will get EVERY release in this line - not just SDCC exclusives but some of the characters like the Android, I can't see the average fan going for.
Vegeta in general during that fight was great. His awestruck reaction to Gohan, the son of his rival, surpassing him, realizing what Trunks did for him and how awful he as a father was to him, to even realizing his rage against Cell made things worse. He even said sorry to Gohan since he denied another Saiyan victory (or was it something else?) and then he helps out Gohan. Then there's his last words on the fight when everyone's gone, how Goku died without fear.