After having the figure for a couple of hours now, here are my thoughts:
Pros
The paint apps and the battle damaged armour are gorgeous
The cloth undersuit sits well and doesn't hinder movement
The hands are nice and soft, easy to swap and hold the blaster in a realistic way - the relaxed palms look very movie accurate
The colouring and damage effects to the jet pack are stunning - shame it's around the back!
The detailing on his wrist guards and shoulder pads
The blaster fits in his hands well and the paint does well to capture that metallic look
The wire in the cape works well and I found the cape very easy to position
Weirdly - the knee pads! Thought they would be a pain and always slipping down but they sit well and are easy to move. I shifted mine up as they seemed a little low out of the box
Good articulation and firm joints
Cons
The hands look toy-like and lack detail
The cloth undersuit lacks any kind of weathering and looks far too clean
The tools for his pouches lack detail and paint effects
I found the jet pack tricky to attach and it sits very loosely
He is very thin and possibly - ever so slightly - undersized, especially when standing next to Vader.
I am sure that someone will get hold of this guy and add superdooper weathering effects and it will look stunning.
Overall - great, solid figure. 8/10.