Hi
I agree with you. I don't understand the reason not to reproduced teeth on the front sproket. To my point of view, it's a huge mistake, sadly visible on all new GHQ's PZIV undercarriage and other GHQ's German armored vehicles ... Incomprehensible !
Is it perhaps for reasons of an easy production or casting ? In any case, the drive sproket without teeth completely changes the silhouette of the PZIV undercarriage.
A neophyte would nearly might be wrong between the front and the rear of the vehicle !
(Unfortunately, everything is not perfect, it's like American paratroopers WWII, Vietnam US infantry and SdKfz 11/1 flak38 : they are amazing, but ...out of scale

! Or, on the last PzIV H : side skirts are placed too far forward on the side hull....

)
I don't understand these defaults particularly since the last GHQ's PZIIIs with side skirts are really amazing, beautiful and at the good scale, with all their teeth on their front wheels ! ....
Incomprehensible....
What happened to PZIV's series !

Pibber.
(Long life to GHQ !)