At the moment I'm busy adding the first half-track armored personnel carrier to WW2 FPS. A special property of the "Hanomag" or SdKfz 251 is its open top. According to Wikipedia: "Positive aspects of the open top included greater situational awareness and faster egress by the infantry, as well as the ability to throw grenades and fire over the top of the fighting compartment as necessary while remaining under good horizontal cover." So this is one feature that will be implemented. In addition the SdKfz 251 will have a mounted MG-34 and inventory space containing ammunition for all the rifles.