Will we need to keep any of them to craft the final dragon slayer weapons (i.e. are they precursors)? Are there any legendaries that will be released that require them to be kept in one piece? My hunch is no as so far they've all been exotic quality and they feel like filler collections, but I'm still reticent to toss my first dragonslayer weapon out in case things change. I feel like there's been little clarity about what, if any, of these collections may turn into something valuable.
I've also been a little worried about the stormcaller weapons just because they're so darned expensive, I know i can craft some, but am still holding back.