I think it's premature to talk a lot about migrating nodes, or at least, I don't have the bandwidth to do so. If anyone has a node they'd like to migrate I'm more than happy to help if they start a thread and flag me.
Following my post How to track dependencies between nodes I now have one more item for my to-do list :
- remove all editing from FlexDash and implement live reordering/resizing in the flow-editor...