No one seems to have pointed this out, and here seems as good a place as any.
Look at the CoH Korea video. There is a hero using a sword and gun. Not just for one super special move, his main thing is sword and gun. Now imagine if you are Korean for a second and see this video. "That looks cool, I want to play with a sword and gun". If they -don't- have a sword and gun set they are pretty close to false advertising. Also, it seems like a response to the desire for the pistol scrapper set. ANd its only half a new set. A set has 9 powers. I'll bet it has 3 katana powers, build up, taunt, 3 gun powers, and a final gun and sword power. Thats only 4 new powers that have to be made from scratch. As for the lighting thing, probably not. The Iconic characters are allowed to have something cool we can't. But not a whole power set.
As for the others. Foreshadow is obviously MA, but also has "chi blasts", which could be considered any of the energy melee powers, but right now ther is no way to combine those. Maybe a "Kung Fu" (as oppsed to ma :/ ) tanker and brute set? The stuff the girls showed off in the trailer seemd super specialized, so I'm guessing its epic power pool/at stuff, assuming we will see it in game at all.