I don’t know how big you want to make this, but it would be a great opportunity to showcase your products. Looking at your stuff with that in mind, I’m thinking maybe a big ghetto made with Junker and Badland terrain, with RDF troops patrolling, searching for rebels.
When I was a kid, my dad took me to the Canadian War Museum in Ottawa, and there was a gigantic diorama of the D-Day landing made with those Airfix 1/72 scale plastic soldiers. What I noticed was that it wasn’t just one single scene, but rather a lot of little scenes all put together, if you know what I mean. In one little spot, you could see troops escorting prisoners, in another spot, wounded men were being tended to, in another spot was vicious battle and so on. All of those little scenes held your attention, and I think that is the secret to having a big diorama. In 6mm, you certainly have an opportunity to put a lot of activity into whatever you decide to depict.
Where there is fire, we will carry gasoline