ElMariachi wrote:During the battle in Lilith's chamber, when Shinji makes EVA-13 grab the blades of EVA-02's weapon, during the shot of his hands being burned because of the mental link, the round parts oon the wrists of Shinji's plugsuit are glowing red and rotating, the as the round parts in Mari's 2.0 plugsuit were doing during Beast mode(except the light was were green then) :SPOILER: Show
Makes me wonder what are those round parts function...
It's worth noting that the valves on Mari's shoulders also appear to be rotating. Perhaps some kind of fluid is being circulated around the suit? A cooling fluid perhaps? In Shinji's case, perhaps heat is being pumped away from the damage to his hands? In Mari's case, beast mode may be generating heat all over which needs to be filtered by the suit backpack. (Apparently, real life bomb disposal suits have such cooling fluids). However, the reappearance of the same spinners on Eva-13's hands would bring this interpretation into question.
Going by the rejected CRC beast mode design which TMBounty_Hunter provided, perhaps the spinning discs could be related to "Beast Mode"? Eva-13 certainly appears to have a hidden mode after it grows a set of new arms. However, Asuka doesn't have any such markings on her newer Willie suit.
EDIT: Before I forget, the spinning device also appears on Eva-08's induction levers during its bootup sequence just before Mark.09 attacks the Wunder. I'd appreciate if someone could provide a screenshot.