These blue engrams need to be removed from playlist activities and anything designed around difficulty or heroic. I can understand them dropping in the wild but when you complete Gambit, Nightfalls, Crucible and whatever else that is requiring you to do lengthy activities, blues should never drop period. I can see them dropping from regular chests on the planets, randoms dropping as you are playing the game and sometimes from regular public event chests but if someone is in a playlist activity or heroic, you should not see them. You should be getting rewards from playlist activities such as: One Legendary Armor One Legendary Weapon Additional Legendary when using a Ghost Mod Possible Exotic Rank 100+ should be rewarding you with materials, glimmer, bright dust and XP. You could even throw in some legendary gear and exotics too.