My small hope for loot drop design in DL: special loot all on last boss

For the last few expansions many class/spec loot items were placed in group instances on early bosses. Legendary patterns, artifact appearances, conduits, etc.

Of course this led to players dropping group early after defeating the boss, with the worst impact if this was a tank or healer. Blizzard are aware of this - way back when the dungeon daily required a drop off an early boss they changed the quest to also include killing the last boss - but they keep designing loot drops to cause this.

Hoping to avoid having to go through this again in DL and they just put these drops on the last boss.