It seems like it would give you a false sense of security. You have to think about it in terms of "could an attacker who can spend $1000/hr brute force a duplicate pub/priv key combination that generates the same robot.
I wonder if you could get better results using a markov chain to generate english prose from a large sample. If you take the top N next word options, and select one based on the next log_2(N) bits of your hash/key, you lose no key space and should get a nonsensical but perhaps easily remembered string.
I wonder if you could get better results using a markov chain to generate english prose from a large sample. If you take the top N next word options, and select one based on the next log_2(N) bits of your hash/key, you lose no key space and should get a nonsensical but perhaps easily remembered string.