custom interiors for spacecraft

Im not just talking about a default interior for the cockpit, but an interactive, customizable, interior for crafts. For instance, if you launch a space station, you can add an airlock hatch, and an airlock, and inside the station add parts which could be added. For instance, science equipment, sleeping bags, windows, storage, etc. There could be a new editor setting to accommodate this, which would put your view inside of your craft.