Thank you for your feedback. I'm glad to hear that you find it very applicable for group multisig setups. In fact, supporting multisig transactions is one of the key features in my TODO list for the project, and I plan to implement PSBTs (Partially Signed Bitcoin Transactions) to facilitate coordination between different parties who wish to sign the same transaction. This will be particularly useful for Coinjoin and multisig outputs that require multiple actors to sign the same transaction. Let's see how it goes :)