ok, first off, asraniel, living weapons, soul stones, is 4 words unless soul stones is a seperated conjunction then its three lol:]
now, about the idea, i think it is a pretty cool suggestion, and the way i picture it working, is that you get a weapon at the begining, and you can like spend money and all kinds of other stuff to modify your weapon and make it better. and as you use your weapon more, you get better at that particular weapon, so it gets stronger, instead of like just your attack power getting better. that way, changing weapons is a big deal, so that people wont just work their way up the weapon chart till they get to the uber weapon, so that every weapon can eventualy end up an uber weapon if you stay loyal to it and are smart in how you upgrade it and stuff.