Oh right, we do need to use a different word set if there is to be an app that takes phrases as input.
My main purpose was to increase readability. If people use this as a way of sharing public keys, e.g. on the phone, we have to make sure they don’t share seeds. I’m open to suggestions.
The proposal doesn’t have checksums. Do you mean computing the checksum of an entire phrase, and appending it at the end of its truncated version? Sounds interesting, is this to decrease the risk of collision?