Something I was thinking about, what do people think of having unarmed based on strength, like it is, but having melee weapons add a smaller fraction of your strength to them? That would make it less efficient for really strong characters to use small weapons, but not eliminate the value of weapons all together.
For example, Unarmed is strength/2. Melee weapons get Strength/3 added to their damage. So a knife with 1P damage wielded by a strength 2 person would do 2P, more than the 1S they do unarmed, but a 12 strength character would do 5P with the knife and 6S unarmed. At some point, the amount of force behind the knife becomes irrelevant, once it is all the way inside you and has cracked a few ribs on impact. The numbers are just made up, it's the concept I'm considering.