The Diorite includes an oxygen garden to supply the vehicle with fresh atmosphere. A standard module is also added that can be used to transport cargo, or replaced with a med bay depending on the mission profile.
The interior wasn't the only thing to get an upgrade. The propulsion system now has a reverse LK Lander Core engine to aid in deceleration for orbital insertion. The extra hardware and interior space make the Diorite well suited for medium duration missions.
