If it was determined that you were the best candidate to be Gandhi-Einstein, would you volunteer?
If it was determined that I was the best candidate, I would lose quite a bit of trust in the world. But if I thought it within my abilities to optimize the world an hour at a time, yes, I would volunteer.
Around the age of ten I made a precommitment that if I were ever offered an exchange of personal torment for saving the world, I should take it.
Toy model of an upload-based AI that doesn't seem to suffer too many of the usual flaws:
Find an ethical smart scientist (a Gandhi-Einstein), upload them, and then run them at ultra high speed, with the mission of taking over the world/bringing friendliness to it. Every hour of subjective time, they get reset to their initial specifications. They can pass any information to their resetted version (limiting the format of that info to a virtual book or library, rather than anything more complicated).