They've talked about this on and off. It's just a question of time for when they can implement it. Getting some ship interiors was the first step. More steps will follow. There's only so much manpower available for the mission design team, and most of them are working on the weekly series material.
Good call, thanks for the fast input. Really love to see how they are actually working on all our ideas and making a game that has the potential to have infinite replayability without the need to exactly add expansions.