I imagine the programming code for such an improvement to the game wouldn't be worth it for the dev team. I support the idea but realistically, the profitability is zero and the likelihood of ever seeing this is also zero.
Maybe for certain equip that can be regained, there's a chance you will get a dud but a chance for good equip. But for rare equip such as those from events, you'd get a good result no matter what. There could be an achievement for collecting all types of one equip piece and combining them