Having the ability to bring another simmer in to act as pilot or copilot jointly flying the plane would be a blast.
You might want to upvote this existing thread.
Closing as a duplicate Wishlist topic. Before posting, search to see a topic exists and up vote that one. Votes can not be combined. Duplicate topics hurt other topics.
Shared cockpit/multiplayer - Self-Service / Wishlist - Microsoft Flight Simulator Forums