Thanks for the clarification. I'd not previously heard the expression used for that. As a wargamer, such set would not be particularly useful to me. I don't build for display purposes.
However, it's always nice to have various scenic elements to add a little to wargame battlefield. For example, I recently added chickens and a clothesline to a Russian house. At the moment, I can't think of anything along those lines, which I wish were available. Model Railroad elements are pretty plentiful, as are various crates.
Just top of mind, a Berlin subway entrance might be useful. I don't know much about them...whether they were covered or not, but such an item might add some neat detail to a city fight. Best of luck with your endeavor.
Please share a link to your website.