By default, the Best in Slot feature does not consider warforged items. It only does so when you specifically change an item to a different ilvl in the “Customize Gear” window.
This is confusing, because in a lot of cases (usually rings and trinkets) a 300+15 item might be better than another 315 baseline item.
Let’s take this example:
We’re looking for the BiS trinkets for an affliction warlock, set at ilvl 370. When I click the button, Mr. Robot will find the best options but only considers the baseline ilvls for each item. Meaning it will completely let out trinkets like “Pearl Divers Compass” and “Balefire Branch” because those are baseline 340 trinkets. Manually customizing those trinkets to ilvl 370 will however show the correct rating of those items.
The initial BiS suggestion is not correct if it only considers baseline ilvls. Yes, titanforing +30 or higher is extremely rare, but in some cases the value of those trinkets outshines anything else.
I’d like to see this worked out a little better. Maybe add an option to include titanforing into the BiS considerations.
EDIT: My example is a bit off. Selecting the Mythic+ level helps in some way for items that drop in mythic dungeons, but that’s not a solution. If we took the same example and said “I want the BiS list for iLvL 390” then the Mythic+ option would not help, since it will consider all dungeon loot at baseline 370 then.