With BFA having spots that ill call Rogueesk I feel they could of added atleast 1-2 new spots to farm up the Heavy Junkboxes. Reason I say this is for those like me who seem to have issues farming up those older content areas that you can get the Heavy junkboxes in can get very tedious and the gold income from pickpocketing from current expansion mobs would be greater compard to pickpocktting older mobs that drop the Heavy junkboxes.
If we did get a couple new farm spots for the Heavy Junkboxes would also get those people who enjoy pickpocketing on there rogues to be able to help those on the Ravenhold rep farm while they Pickpocket farm the current content.
The one spot i can think of that they could of let Heavy junkboxes as part of the loot table are the mobs in Freehold both the Tiraguard location and the dungoen.