I'm sure Bungie has people listening to the forums, and hopefully they realize that many players are quickly expending weapon parts to reroll weapons and upgrade the new queens weapons and upgrade the exotics to HoW levels... My Warlock currently has over 1700 Hadrionic essence, but about 22 weapon parts. My Hunter has about 1200 Sapphire wire but about 15 weapon parts My Titan has about 1100 Plasteel Plating, but has a lowly 4 weapon parts. So, a simple exchange of materials would alleviate many problems for many players. So far Bungie has made great progress with new exchanges in HoW so i hope they can add in this simple fix. Thanks for listening.