LightSabres!

Powered Frames.

Think Spyers from Necromunda.
I tried writing themed fluff for them and it was crap.
I tried normal fluff, and it was crap. I can think it but I can't type it, so here's the best your gonna get. Frames are exoskeletons that the user wears as a sort of stripped down power armour.
Your basic frame gives support etc to a character, and is usually used after serious injury, often just so they can stand up again. This type will give you no real benefit in game terms, its just a nice excuse for a guy who previously had two broken legs to return to battle within a few months.
Powered frames are what spyers use and are generally full body braces augmented with pistons, pneumatics and other stuff to increase the wearer’s strength and speed. This type can be anything from just enough to get you moving to those ones you saw in aliens (enough to fight a 'nid!?) Frames do not have much in the way of armour or protection unless the wearer equips it. They can also be modified to include non human layouts i.e. Wings, magnetic feet or huge claws...

Anyway, I forgot what else I was gonna write...

Powered Frame Rules

In addition to this, the frame can also have a number of improvements to normal physical abilities, a couple of which I have thought of below;

Running feet;

The legs of the frame have been modified from the knee down, taking ideas from the (kangaroo) where the weight is on the ball of the feet, and a complex system of 'tendons' are arranged so to give maximum (movement) for your energy. Characters movement rates and jumping distances are increased by 50% and height is increased by around 1' However, take into account the smaller surface area of the feet in game.

Magnetic Shoes;

Electromagnets are incorporated into not just the feet but the whole design of the frame... thus characters might be able to scale metal walls etc?
And btw its electromagnets so don't go thinking every bullet, weapon and piece of metal in the game is gonna come flying towards you instantly. :D