While the five POA figs are killing it for me, I actually don't mind the lack of leg articulation too much. Would I prefer it articulated? Sure. Do the shrunken vehicles stink? Absolutely. But for a two-legged walker, there really isn't that much posing to do, and an army of walkers posed in the exact same position isn't as awkward as an army of identically posed humans.
BUT, that opinion may change when the vehicle is in hand.