I know you said you have some soft sides on your list but I would love to get my hands on some M2/M3 Half-Tracks with Anti-Tank and Anti-Air variants.
It really comes to the number of parts that you can fit on a sprue. We had been working on different solutions to maximize the number of variants or options available on each kit. In the end, we always had to scarify something in order to complete the project. Hopefully with the eventual release of our first six kits in October, we should have more financial backup to tryout something new!
...a M3 Half-Track with an anti-tank gun is something we always wanted to do!