Which brings me back to a question that I've been trying to get answered by anyone for months now.
Hypothetically, if you had a unique item with very large roll ranges on it, would a 4LP version of that item still be considered BiS even if it had min rolls on it?
If yes, what if the power gained from the 4LP was actually less than the power of the roll range differences? So if a perfectly rolled 0LP version was actually more powerful than an anti-perfectly rolled 4LP version and the low roll 4LP version, then the unique in general is BiS and the LP is just an extension of that roll range.
If no from the 1st question, where is the line on that power requirement for the item to be considered BiS? There must exist some arbitrary line on the item's roll ranges where it becomes BiS. How is it defined?
This tends to lead to a point where each unique item needs to have a definable point where the reasonably achievable version becomes that item's "true form" or the BiS inflection point or something. I don't have a good name for it really but by giving each item a relative LP chance to balance that point against each other, items have a higher or lower expected "high LP" that the item can be chased to which defines that item's "BiS point". This is something that we have attempted to define with the LPL of each unique item.
The general follow up questions to this whole thought experiment is: Should unique items have a maximum LP that they can roll with relative to their LPL? Should Wings of Argentus have a max LP of 1 or maybe 2? Well, most of the time when I ask that question I get a resounding no (but not always).
So I guess the question that remains is, does the possible existence of these ultra rare, almost impossible variants of Unique items ruin the power feeling of achieving the maximum reasonable power level of that item? Does the possibility of a 4LP Wings inherently make all non-4LP wings not BiS?
To complicate matters even more, each step of LP is not created equal in potential power gain. The list of affixes to pull over to any unique can be ranked in power levels. Each LP provides less power than the one before it. The 4th best affix to bring over provides less power than the 1st. So each item now has a variable relative scale on how much power it gains per LP. Some items might not have a very good 4th affix to bring over and the relative power potential between a 3LP item and a 4LP item might not actually be that big in some situations.
Now, I think it's important to take a step back and look at the bigger picture sometimes. What is the purpose of the Legendary system in general? Well, it has 2 main purposes, provide a late game item combination hunt system for players to push their builds, providing an end game chase and make more unique items end game relevant. So to satisfy the initial purpose, we could make all LP be created equal and have Wings dropping with 4LP at the same rate as Spoons do. This would unfortunately completely undo the second purpose. So, can we enable both at the same time? Yes, the relative LP rarity between uniques needs to be curated to allow for the relative power gained for that unique with LP to provide an inter-item competitiveness for BiS depending on LPL. More powerful items can have less LP and still be chase items so that more items can be considered for late game builds.
So as you can see, this is a very complex issue. And with all that in mind, if I haven't bored you to death, what would be your suggestion?