That seems like a reasonable idea, but frankly, the suit used in the hoax didn't really need to be all that sophisticated. I'm sure it could've been made from some of the fur coats Clint apparently saw in his father's shed. Distance, blur, and...
I see no similarity at all. The irish pair were clearly, to me, mimicking instruments, but that finnish ensemble were not at all. I can't say I'm familiar with Loituma, it doesn't stand out particularly from other middle-of-the-road...
If I was planning something like that, I'd get a gorilla suit for research: how is it cut and stitched, how does the actor get in and out, what needs improving? and then design my own suit, but better.
I would conclude that most analysts trained to look at satellite images (D.G. obviously excluded) are able to identify unusual-looking imagery, while fighter pilots or drone operators, whose training has a different focus, are more likely to find...