The only thing I can think of is there may not be a feasible way to run a hidden wire through everything and not over scale it.
Realistically though, I'd just be happy they do more than just this one PF for Rambo.
I am curious though, how it works that as old as the Rambo films are, likeness rights don't seem to be an issue for any company, whether you think they captured the likeness or not, every official Rambo piece has had the rights to depict Stallone's likeness, but Rambo's from the same era as Predator and Aliens and those films didn't cover it. Doesn't matter, we Rambo fans win because companies can make the effort to capture it freely and not have to use the go arounds like HT with some figures, but I am intrigued by some of the behind the scenes stuff in collectibles.