I am searching for more information on the concept of refund transactions. I found that the MRL is working on a paper on the topic (source).
Would this be something that will be used in channel applications? How would this work, would a tx be mined but the output timelocked with our current unlock time and another tx would be create that could back send the output before the unlock time?
It sounds like it could be a equivalent to the simple bitcoins timelock tx component.