With the arrival of Patch 10.1.5, Blizzard is increasing the drop rate of BoE trash drops in legacy raids. These include many popular transmog pieces which are currently very hard to acquire past their current tier. While we don't have the exact list of items affected, we expect it to include items like:
Felflame Inferno Shoulderpads — Monk Antorus shoulders, orb shoulders moggable by leatherwearers Diadem of the Highborne — Paladin Tomb of Sargeras tier, crown transmog for platewearers Reaver's Rattling Girdle — Warrior Tomb of Sargeras tier, green belt not available otherwise Hide of Chromaggus — Druid Blackwing Descent Tier, wing transmog for leatherwearers Soul Blade — Unique 1-handed sword model from Bastion of Twilight Spire of Scarlet Pain — From Firelands Obsidium Cleaver — From Firelands Flayed Demonskin Belt — From Hellfire CitadelWhat other BoEs are you hoping to get from raids in 10.1.5?
Updated some legacy raids to drop bind-on-equip items more often when running them solo. Developers' note: We found that some legacy raids had a very low BoE drop rate, so this change is to make farming those transmog items easier. Read more on wowhead.com