Great to see the future release of the Pionierwagen Unic P-107 U.304(f) & Unic P-107BU Artillery tractor. Would be good if you eventually make the other variants built on this chassis.
In the same vein , have you considered making the Lorraine Schlepper family of armoured vehicles ? None of these have ever been available in 1/72 plastic kit form, that I know of.
From the one Lorraine Schlepper chassis you could create a range of Lorraine Schlepper vehicles, much as you did with the 38t family or armoured vehicles. I feel these would be popular with modellers as no one else makes them, and you seem to specialise very well with subjects that have not been covered before.
With your upcoming Panzer II , I also hope eventually do the Marder II on that chassis, as its also not available in plastic kit form, and would probably be very popular