I agree what you say about updating the articulation. I love the Rau design, althought this 1/60 Q-Rau is not a great toy (still looks great for display). I bought the red version in normal price and then the Max version in discount recently.
I hope Yamato will release a new version 2 1/60 green Q-Rau (TV version with better articulation, details and decals)...