Well the revoltechs focus more on the poseability and accesories rather than the actual features of the figure. So i don't expect the legs to open up to show the gun storage compartment etc.
In other news, i just opened up my EVA01 revoltech. It feels very rubbery (the PVC), and the gloss is applied pretty badly. Some parts, the gloss layer is obvious and it can be "peeled" out. Despite that, its still a cool toy to play around with.