>Is power armor a vidya joke or does it actually have potential?
It isn't really the armor part thats difficult, we can craft metal to our will in nearly every degree imaginable + other enhancements. The trouble comes with trying to power this armor, because no man is going to carry 3-4 times his bodyweight in thick steel on his own, it needs to have mechanical support that conforms to his body, the mechanics for that aren't that difficult to design, but again, they require power, more than we can reasonably supply for any extended period of time