Well, for one, props are mainly movie based, and thus it often takes a movie to get props! Something like this, I've alway been an Iron Man fan and I prefer the Silver Centurion style armour, but I don't have the knowledge, talent or skills to create a full size suit. But I do have enough talent to trim and paint such a thing. So I have to wait until someone comes along to create, and that normally doesn't happen until it shows up on the silver screen. And with the movie, they normally have to make adjustments for reality, which the comics don't always account for (micro aligning electric tiles?) So the movie version, at least, is possible.
The one Iron man suit, pre movie, which I believe, you, AlterEgos, have been working one, was just not my fav, nor did I have the money available to get one.
That being said. In the next year or so, I hope to make a comic based Wolverine, in the only colours that count, brown and tan!!