I'm happy to assist others in writing one, but I don't plan on doing it myself. While I would consider shared-cockpit a core feature requirement for an airliner, the TBM is almost never flown multi-crew, so that puts the feature rather low on the priority list from a realism perspective. And a second reason is that the airplane runs tons of randomizing code that gives it the "organic" feel of every flight being different, every system responding a little different to inputs, etc. Replicating that between two nodes would be a major undertaking and I'm not really sure is even practically possible (at least to my requirement of stability & usability) by using smartcopilot's simple dataref syncing approach. I suspect it would take a much more integrated approach that would talk to the internals of the systems simulation directly.