I feel you. Yet my vault is overflowing with red border weapons, that I can't dismantle, because I am stacked to the brim with resonance elements, but nothing to craft. The craftable weapons just don't seem to drop. Don't know what Bungie has been thinking. The idea is okay, but the execution sucks (as usual). They basically destroyed the fun of having a weapon dropped, since it hardly doesn't matter what roll it has. People craft stuff.