OK fine, but I just want to point out that you kind of stress me out a little when you say "any brainwallet you can memorize can be cracked" because it makes me doubt my understanding of cryptography (because it implies that the 12 word randomly generated mnemonics in wide use are not strong enough).
Well it's obviously false that any brainwallet you can memorize can be cracked, because theoretically one could memorize a private key. But you're not going to be remembering that in 6 months.