[tlrobinson]

> 2-of-2 multisig that downgrades to 1-of-2 multisig over time

Did you mean "downgrades to 1-of-1"? "1-of-2" implies either key would work.

> The multisig reverts to only your key after a printed expiration date on the note

[ccamrobertson]

Yes, that makes more sense, I was mischaracterizing it. 1-of-1 is more appropriate (although the notion of a 1-of-1 multisig is a little odd at face value until one digs in).