wamphyri13
Super Freak
Motu, I agree with you. My thinking was just that since the new design/material was superior to the original 2, he would stick with that until something better came along. ARC reactor core Mk III is from the Mk VI suit on. Why go back to an inferior design when you can create your own superior one? Now I admit I don't know the comic book history of Iron Man, so I don't know for sure, but was Tony creating a form of Vibranium for the core or, "charging" an existing form of Vibranium? Because according to Howard Stark in First Avenger, Cap's shield was made from it and that's all there was. Now we know that there is/can be more from Wakanda, but that info wasn't known in IM2. As far as the shape, maybe that's the only way Tony could get it to work properly, hence the reason all subsequent cores are triangular in an assortment of various shaped units. I don't really know, I'm just speculating.
Ryan
Ryan