great first post. Welcome to the boards
yes I like this idea. If I remember right, the clone of Sun Wukong wasn't a "clone" per se, more like a "reincarnation." I think he was imprisoned as a statue, but his soul escaped and looked for a suitable body or something like that. You actually hit the nail right on the head there though, because the concept of reincarnation fits perfectly into the idea of a Deathless person. Instead of being reincarnated as something else, they've figured out how to be reincarnated into themselves.
I also love the idea the Infinity Blade could even be remotely related to Dragonball/Z/GT (in japanese Sun Wukong's name is "San-Goku")