1. Why the f# didn't they add the option to use also bitcoin addresses (instead of only public keys) to create multisig addresses? I am sure there must be a strong reason but I don't see it at the moment. Many users don't know their public keys immediately, and some (e.g. Circle etc.) don't know them at all.
2. When a multisig transactions has been partly signed, how can the other allowed signatories be notified? (besides emailing them).