Hold on. So the multisig wallet itself is a smart contract? Why isn't it this stuff handled client side?
How do you plan on allowing multiple people to have partial control over a client side wallet?
I imagined something along the lines of a chain of signatures that gets broadcast as a transaction when all the pieces are in place. I've got some reading to do ..
Oof. I wonder if any of the people who lost funds will sue Parity for negligence. Would they have a case?