The comments in the Q&A about “Shared Cockpit” were interesting.
Yes, a very complex feature to implemented correctly, if it is to work well, especially with complex planes.
What surprised me was that this discussion did not include any references to Multiplayer, as it would seem that to support Shared Cockpit with 2 pilots, (or hopefully more than 2 pilots, as already done by P3D), would probably also require quite a large overhaul of the Multiplayer System - The current Multiplayer system already having numerous stability issues as it is .