What more? Mechs with guns (Clearly everyone in the forum wants them back), Submarines (for water/poison/lava worlds and don't forget depth mines and torpedos), "Space Explorer Craft" (or a miniature ship that is used in the vacuum of asteroid fields), VTOL (Used on planets, "Vertical Take Off and Landing") Probably good thing to promote the use of vehicles, would be giant monsters that would live in high difficulty planets... What more then?