They recently changed it in WoW to allow you to use legendaries in transmogrification (make gear look like something else). This allows you to continue to use your legendary equipment even after you have replaced it.

It would be nice to see set bonuses or something on gear. WoW had set bonuses and trinkets which weren't just additional stats but would be things like "Your healing spells heal an additional 6% over 6 seconds" or "Your Aetherflow has a 30% chance to grant an additional charge."