The obvious thing would be for their bonuses to be applied to world crafting stations like Forge of the First Men, volcanic and frost temple forges, etc, or any such stations added in the future, if said crafter thralls are nearby.
Would add a new element to getting the best gear possible by escorting the crafter to the station safely and could make for some interesting quests going forward as well.
I haven’t tried this to see if it works, but if not, this is a pretty good idea to implement. If someone is willing to risk taking a T4 crafter they should benefit from doing so.
Just attempted it for both the Volcanic Forge, and the Frost Temple forge, no dice. Did find out someone had renamed the volcanic forge inappropriately though, lmao