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Well the Tiger II would have been my choice, it seems to be more a wish for 2016
What about the Tiger II? I hope it's already on the to-do list
The Tiger II would be a challenge! The size of the tank with two turret variant to fit into 3 or even 4 (like the Tiger I) sprues is something that we need to look into! The Tiger II is something that we will do much later... after we had gain more experience with plastic production first!
other vehicles that come to my mind would be, for both i know of no plastic kit by other companies. But would the demand for those be enough to justify a plastic kit? Most of "the" german vehicles are covered by your release. In general i can think only of a few that might be interesting in greater numbers (Tiger 2 as mentioned, 38(t) based vehicles (see below, my personal favorites) and maybe the Jagdpanzer IV (with l48 & l70 guns) others are much to rare to really justify a plastic kit (like a Ferdinand, Hummel (& Nashorn), etc.)
1. Sd.Kfz. 138/2 - Jagdpanzer 38(t) Hetzer (& Flammpanzer 38(t) Hetzer)
pro:
- mass produced (about 2500-3000, might not be as may as the StuG IIIG, but it was only produced during 1944-45)
- very good documentation about the vehicle
- fairly "easy" to make (maybe a 2 sprue kit?)
- some parts might be used for other kits (see below or a Panzer 38(t) when you go for early war kits)
- wargaming related: most likely a fairly cheap tank, so a gamer might field more than one or two
con:
- no variants except the flammpanzer
(- demand? can't comment on that though - personally i love the hetzer)
2. Sd.Kfz. 138 Marder III Ausf. M & Sd.Kfz.138/1 Grille (15cm Schweres Infanteriegeschuetz 33/1 auf Panzerkampfwagen 38(t) Ausf. M)
pro:
- plenty of common parts except gun (and ammunition storage); only for version M though
- fairly good documentation
- wargamig related: dual purpose kit, it serves very different need if i could be produced in a kombi kit (artillery & AT)
(- maybe there is a possibility for a Flakpanzer 38(t) in there as well, but the supersturcture is different (gun shield) and this would increase the number of parts even further)
con:
- fair complex kit, but you might learn from the Sd.Kfz. 250
- not really a common vehicles "Marder III M" about 900-1200 built, "Grille M"about 300 built
(- demand? Certainly not as high as a Hanomag, but for a lot gamers the combination in the kit could be attractive)
All of those are vehicles id love to see (until i get a Tiger 2)