Some one those nodes change the way a weapon handles dramatically. Scarcity doesn't demand value on its own and to the players who still have hundreds of weapon parts it's not even worth a passing mention but those who eat them up (me and a few others I'm sure) are hurting for them because, and I can't speak for everyone here,but it's about the variety of the guns not which one handles the best. Let me put it this way a specialized tool always out classes a general one. So I try and adapt to a combat situation. By noosing the wep parts it just lowers a guardians ability to adapt