I can understand the want to hold onto the good weapon from vanilla. But that shouldn't keep you from moving on. There is more than enough space to hold those good weapons. Only hoarders need more vault space. However, paid vault space may be the answer for hoarders. Perhaps have Xur sell it. 35 strange coins for 5 of each category (15 for a single category). It would give a reason to go get those strange coins for the people who have all of the exotics.