Guaranteed blue drops, because you need more things to dismantle? Also, the full RNG system (as ugly as it is) prevents people from avoiding certain strikes because they don't need/want gear from there. Which was always an issue in WoW. Also strikes do have guaranteed loot, if you select them from the map, instead of doing the strike playlist. The reward for doing the playlist is marks, which lets you choose legendary gear. Which is a far better way to get loot than grinding Sepiks Prime for a 0.2% at his legendary gun drop. The loot system in Destiny is a pain if you're looking for a specific item, but it's actually more generous than WoW is/was if you're looking for upgrades.