I wanna see a coop game where you're split across a spaceship and mission control, then something something goes wrong & you gotta work together to solve the problem, like Apollo 13 crossed with Keep Talking and Nobody Explodes.
Like, fully simulated Apollo and ground systems, schematics/etc available to troubleshoot, but also supporting other ships and levels of fidelity as add-ons.
Maybe a full Earth->Moon->Earth trip, but there's statistics on something going wrong. Then again it's 3 days there and back, maybe not a full trip.
oooo yeah that would be amazing!!
Half of me wants to say it'd be even better if you'd work together to design the ship beforehand, ksp-style, but I can also see some major issues with that affecting (for lack of a better word) "balance" (and things like generating schematics & internal components that can have failure states)
Maybe it could be a separate "mission builder" mode instead?