Honestly I wouldn’t want myself as my own guardian angel. In fact I think very few people look out for themselves well. I don’t want another version of me around, one is too many already. I’d probably be able to identify a number of people whose chimera I would if I could understand them well enough to understand what to stitch together to what, but everyone I know at some core level is deeply flawed and one of them is enough. Maybe I would want some of them available after death as an AI avatar, and maybe I would like the idea of my own avatar continuing beyond my existence.

But I actually would prefer an entirely synthetically aligned “guardian angel” in the role outlined - definitely not -me- - I struggle to do right by myself as it is and two of me working invariably against my self interest would be a nightmare. A smarter version? Sounds doubly worse.