You forgot the Sdkfz 251/1 Wurfrahmen40:
I didn't forget it, I just feel it's not appropriate. 28cm HE and 32cm incendiary rockets are way outside the scope of this game. In addition it also had a minimum range of 300m.
It's a mobile artillery piece and really has no place in a tactical level game.
I also left out:
SdKfz 251/3 - wireless vehicle
SdKfz 251/4 - ammunition carrier for le.I.G. (light infantry gun)
SdKfz 251/5 - engineer (troops) vehicle
SdKfz 251/6 - command vehicle
SdKfz 251/7 - engineer (equipment) vehicle
SdKfz 251/8 - armoured ambulance
SdKfz 251/11 - telephone vehicle
SdKfz 251/12 - survey section instrument vehicle
SdKfz 251/13 - sound recording vehicle
SdKfz 251/14 - sound ranging vehicle
SdKfz 251/15 - flash spotting vehicle
SdKfz 251/16 - flame throwing vehicle
SdKfz 251/17 - 2cm Flak (Sf.)
SdKfz 251/18 - observation post vehicle
SdKfz 251/19 - telephone exchange vehicle
SdKfz 251/20 - infra-red searchlight vehicle