If I were going to make such a document, I would make it minimally restrictive. I would rather be brought back even in less-than-ideal circumstances, so that I could to observe how the world had developed, and then decide whether I wanted to stay. At least then I would have a me-like agent operating on my own behalf.
If they bring me back as a qualia-less em, then at least there's a chance that the em will be able to say, "Hey, this is cool and everything, but this isn't actually what my predecessor wanted. So even though I don't have qualia, I'll make it my personal mission to try to bring myself back with qualia." Precommitting to such an attitude now while you're alive boosts the odds of this. At worst, if it turns out to be impossible to revive the "observer", there's a thing-like-you running around in the future spreading your values, even if it doesn't have your consciousness, and I can't see that as a bad thing.
Well what if suicide is illegal in the future? And even if it isn't, suicide is really hard to go through with. A lot of people have preferences that they would prefer not to be revived with brain damage, but people with brain damage do not commonly kill themselves.
If it's worth saying, but not worth its own post, then it goes here.
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