Enhancements

[Redwizard]

Maybe there could be a trader who sells enhancements, such as body upgrades. These enhancements will be of a cyborg nature, such as cybernetic arms/legs/eyes and such. They could be purchased for a rather expensive price, but when bought, they could fucntion excellently for some time, but degrade as time passes and as the player dies more often in battles. These enhancements will increase accuracy and rate of fire on some guns, not by an incredibly large deal, but not by an amount too little to notice, either. The parts will need to be repaired so often, so it is similar to the effect a str, or a con potion has on GK, depending on what part you buy.
Legs = Speed increase
Arms = accuracy, strength in hand to hand combat damage
Eyes = accuracy
Torso = possibly HP

This idea could work well, depending on how the approach toward repairs will come. Maybe players must have to buy oil also ;-)