Wow, that's a lot of images to go through.
I was interested because from my humble knowledge and experience with various artist, each have their own unique way of 'getting inspired'. Yours, well, I'd say is rare thing, but very thorough.
You know, some people I know who do stuff like that have various methods, but I don't think anyone of them employs such meticulous research when creating a single work. Some plagiarize other's work, as you've said, a tank for instance, and then sleep on it, later modifying it from time to time with some new fresh ideas, to get a more or less unique image. Others go to extremes, using drugs, though that is just idiotic, if you ask me.
They aren't concept artist for a big project like you, though, so I guess it takes of some of the responsibility from their back, but that's just stupid to think like that, if you ask me.
Good luck with your work!
Oh, and I forgot to ask, that avatar of yours, your work? (Could have missed it if you've posted it already).