I think we should go back to Jango. Marcus is too jarring, like The Concierge said. I don't mind the word Jango so much. I'm more irked by Morrison's accent.
For JarJar, I'm torn about what to suggest. Any change we make will stand out against the rest of the prequels. Can we take a Phantom Editor approach and leave his voice unchanged, but cut his speaking down as much as possible?