I can understand the desire to include them, but unless one provides documentation that a certain vehicle was operational in combat in the time frame of the family, Battlefront just won't do it. I recall in CMAK there was a vehicle type (I think it was a Pz III with a 37mm gun) that was removed in a patch because it was determined it never operated in North Africa. It was later reintroduced in a further patch when some one produced evidence it was. I don't know if the vehicles you mention qualify or not though I'm guessing the Protze does.