And where the hell did I mention that improving or improvising is a bad thing? I just stated the obvious. If Neca could get away with non screen accurate figures based off films they could make the same happen with Kenner stuff.
As for Grid's tail I think you are wrong. Not everyone has the necessary skills to do custom figures. Besides why should we do their job? We pay for Grid alien not some random Alien loosely based on Grid. I guess they will remake the same figure again. With more accuracy. But you should already know about Neca's cloning variations.