There may well be, there may not. I know lots of WWII collectors and, many are eclectic in what they collect simply, they buy allied german and other nations figures and AFV's but, I don't know many that specialise in one battle or, one period of the war. As the clammer for Berlin on this forum at least, seems relatively popular it may tempt manufacturers to think well, this or that will sell does not mean it will and, collectors as seen on here and other forums I am sure, are notorious for knowing what will and will not sell.
The bunker you speak of was not really a very large structure or, very interesting per se in look. in the area you speak of it was more garden like. The whole point of the structures was not to give away their position.
I could see some figures of Hitler and troops being released, we already have a late war hitler and young soldiers for late war but, I think the buildings you want are too plain and are a specialised type of collector who would want them.
If you want it get a dio made either by yourself or, by one of the many dio builders on here like Firebat et al then rather than wait for something that may not come out which, is likely, you have a bespoke set in your collection
Mitch
