I know that you tend to only model german war material, but since you've already made a hanomag (which is perhaps one of the only half-tracks in flan's mod so far), I hope you consider modelling the japanese type 1 Ho-Ha half-track. It was based off of the Sd.Kfz. 251/1 and had a slightly more boxy front portion.
(I'm not suggesting this with intent to be an annoyance, I'm only doing it because I know you'd be capable of making a good-looking Ho-Ha due to your plethora of previous models)