I can forsee another issue here being that there would probably need to be some visible indication on the item showing what the order was.
We are mostly imagining this as something you do in one session. But let’s say you MW some items to 12/12 as an initial attempt, then don’t play for a few days or a week. Are you going to remember what order all the crits applied in? If not, you’d be taking a risk spending a huge amount of resources to only reset back to 4 or 8.
So ideally they would need to not only store the data on the item but also display it to the player. On an already cluttered Item Stats UI that might prove challenging. Though not unsolvable by any means.