I describe linked channels here: https://github.com/BumblebeeBat/FlyingFox/blob/development/docs/linked_channels.md
This means FlyingFox is will not just be Truthcoin-like, it will be a full implementation of Truthcoin.
I'm very excited about SMPC. I have a new project for implementing "coercion-resistant welfare functions for futarchy" which could benefit from it.
I don't really understand your work on channels, which is why I'm happy you are working on it. I think next week I'll have more time to look into what you've been up to.