Ooooh this is screaming "Play with me!"
As a kid in Albuquerque in the 1970s I bought a cardboard box full of plastic Romans at the flea market. Most of the Marx Ben Hur playset, some Warriors of the World, the carcass of Remco's "Big Caesar" and a lot of the little marching figures that came with it. I think I paid $1.50.
All of those toys, plus plenty of 2x4s for walls and index cards folded in half for tents made a very crude version of what you have perfected here. You've got a great set up, great collection, thanks for sharing.
By the way, I sold those toys a few years later at the same flea market, probably made a sweet profit of $2 or $3. O tempora, o mores!