Well, the amount of work would depend on how loot is generated, it could be fairly easy to implement, it merely sounds complicated.
Just wanted to note that I was merely interested in providing a technical solution (and proving that a viable system to avoid save scumming for loot could be reasonably implemented), I personally don't really have an opinion on whether they should or should not implement such a system.
Sadly, people insist it's difficult or "too much work" because they don't want to see the current setup change, not because it actually is. Thank you for speaking up, though!