Ok...... For starters.........
Incinolet toilet. This replaces that odd one man station behind the engine near the rear door. Privacy curtain and like a prison toilet a handwashing sink above.
Inertial Location system. These do not need GPS or Loran. Input where it is manually or start from an unknown. An inertial system can tell you your exact route, exact speed, and direction of travel (in degrees) so you can exactly retrace a route. An inertial system can tell you distance and degrees from any known point (forward observer) or from a stored waypoint. A ring laser gyro inside keeps it on track.
On board compressor and reserve tank. The Project was meant for recovery. A large number of air driven tools will work great at 125 psi some need more. Inflatable lifting bags to move debris, air drive ratchets to dismantle things, fill dive tanks, inflate a zodiac, inflatable shelters, nail guns to build shelters etc.
CCTV with the bullet resistant windows that have been fielded as part of armor upgrades for urban combat in Iraq. These look like classic periscope blocks except behind each is a megapixel day/night camera that can be seen from any station in the vehicle. The crew can retain 360 awareness even with all hatches closed and locked.
Pepper fog. External spigots make a short range, 360 degree, irritant cloud of oleoresin of capsicum (OC) spray. The burning sensation to the eyes, nose, throat, and skin would force hostiles back from the vehicle without lethal force or the Team exposing themselves to danger.
Hot and cold water taps that draw from a onboard reserve of water. This water is draw into tank A by means of a low voltage water pump and 20 meters of hose with a float at the intake to keep it out of bottom mud. The water is filtered for debris, and contaminants through a ceramic filter. Water is drawn from tank A into a boiler and raised to extreme temperatures killing viruses, bacteria, and rendering chemical inert. From the boiler water goes to tank be to be drawn into an electric chiller for cold drinks or electric heater for hot water on demand.
Foam filled tires....... high density foam replaces air in the tires. The foam has the cushioning effect of a pneumatic tire without the bother of flat tires. Nothing can be done for tread wear but broken glass, rebar, and nails are not problems forcing the Team to dismount in every town.