Bungie needs to address Weapon Parts & their low drop rates. It would be nice if we could exchange Armor Materials for Weapon Parts at a 1:1 ratio & vice versa or possibly even buy them along with Armor Materials for an amount of Glimmer/Legendary Marks. If Legendary Marks was to be a solution it would have to be like 10 Legendary Marks for 100 Weapon Parts/Armor Materials because Weapon Parts/Armor Materials cannot be farmed like the other planet related materials. Armor Materials aren't a problem to get but being that there are only 3 slots for Weapon Engrams & 5 slots for Armor Engrams it's always more likely the case that you will get more Armor Engrams than Weapon Engrams. At the very least this difference between Armor & Weapon slots should be enough of an indicator that the number of Weapon Parts dropped per Weapon Engram decoded needs to be increased as opposed to the reduction which was done on a previous patch. With Weapon Forging out of the game my suggestions are definitely possible solutions to the Weapon Parts issue. Alot of the 'Fun' to Destiny is trying out all the weapons you come across which includes their differences in perks. I just don't like the feeling of keeping promising weapons in my Vault because I can't use them to their full effectiveness.