These seem like some pretty good Ideas.
I was thinking about using strips, chords, ets... to attach the tank to the wall.
I was also thinking of attaching the stand to the wall and then using a strip, attach the tank to the stand.
Breaking glass is another worry of mine, since most of my tanks are glass, but I don't know of any method to prevent this.
I am planning a trip to my LFS, maybe they'll have some advice.
I was never around for any major earthquake, the last one I felt was about four years ago, it felt as if someone turned the bass up on a stereo system.